傳送門2 (Chinese Wikipedia)

Analysis of information sources in references of the Wikipedia article "傳送門2" in Chinese language version.

refsWebsite

Global rank Chinese rank

218web.archive.org

1^st place

35webcitation.org

24^th place

29^th place

30gamasutra.com

704^th place

876^th place

25eurogamer.net

288^th place

488^th place

15pcgamer.com

428^th place

534^th place

12vg247.com

1,057^th place

1,151^st place

12kotaku.com

401^st place

606^th place

11shacknews.com

1,951^st place

1,995^th place

11gameinformer.com

499^th place

587^th place

10computerandvideogames.com

1,992^nd place

1,792^nd place

10wikipedia.org

low place

10ign.com

53^rd place

91^st place

8usatoday.com

41^st place

182^nd place

7rockpapershotgun.com

1,438^th place

1,702^nd place

7g4tv.com

3,551^st place

5,350^th place

6wired.com

193^rd place

421^st place

5arstechnica.com

388^th place

546^th place

41up.com

1,288^th place

1,246^th place

4escapistmagazine.com

2,126^th place

2,166^th place

3archive.today

14^th place

18^th place

3guardian.co.uk

197^th place

183^rd place

3gamepro.com

2,419^th place

3,434^th place

3doi.org

2^nd place

23^rd place

3gamerankings.com

820^th place

1,031^st place

3metacritic.com

37^th place

84^th place

3gamespy.com

1,256^th place

1,168^th place

3gamespot.com

125^th place

231^st place

3time.com

61^st place

145^th place

2valvesoftware.com

low place

2kotaku.com.au

2,394^th place

3,953^rd place

2telegraph.co.uk

30^th place

111^th place

2mtv.com

80^th place

348^th place

2theglobeandmail.com

293^rd place

782^nd place

2fastcompany.com

1,040^th place

2,779^th place

2wsj.com

79^th place

143^rd place

2joystiq.com

1,728^th place

1,483^rd place

2giantbomb.com

2,694^th place

4,038^th place

2pastemagazine.com

661^st place

1,894^th place

2pcworld.com

1,317^th place

1,390^th place

2next-gen.biz

6,429^th place

4,592^nd place

2metro.co.uk

296^th place

818^th place

2polygon.com

180^th place

302^nd place

2gamesindustry.biz

1,124^th place

1,604^th place

2nytimes.com

7^th place

31^st place

1gamer.com.tw

2,515^th place

83^rd place

1amazon.com

105^th place

269^th place

1sina.com.cn

144^th place

3^rd place

1msn.com

117^th place

166^th place

1nationalpost.com

818^th place

1,332^nd place

1thinkwithportals.com

low place

1gameological.com

low place

1npr.org

92^nd place

352^nd place

1develop-online.net

9,229^th place

8,808^th place

1thefinalhoursofportal2.com

low place

1news.com.au

294^th place

772^nd place

1jonathancoulton.com

low place

1gametrailers.com

3,049^th place

3,048^th place

1nowgamer.com

low place

8,766^th place

1theverge.com

114^th place

276^th place

1geekbeat.tv

low place

1geeky-gadgets.com

low place

1gamecriticsawards.com

low place

1avclub.com

136^th place

794^th place

1bostonherald.com

1,644^th place

4,405^th place

1cnn.com

28^th place

71^st place

1ew.com

35^th place

138^th place

1cbsnews.com

108^th place

449^th place

1mirror.co.uk

245^th place

875^th place

1interactive.org

5,320^th place

low place

1bbc.co.uk

8^th place

32^nd place

1steampowered.com

1,340^th place

1,082^nd place

1shoptonews.net

low place

1up.com

Leone, Matt. Gabe Newell: Portal 2 is "The Best Game We've Ever Done". 1UP.com. 2010-03-11 [2010-03-12]. （原始内容存档于2012-02-03）.
Watts, Steve. Valve Cut Portal 2 Competitive Multiplayer. 1UP.com. 2010-08-26 [2010-08-26]. （原始内容存档于2012-03-10）.
Nelson, Mike. Portal 2 Review. 1UP.com. [2011-04-21]. （原始内容存档于2012-03-10）.
Gifford, Kevin. Japan Review Check: Portal 2, Ghost Recon. 1UP.com. 2011-05-11 [2011-05-11]. （原始内容存档于2014-01-06）.

amazon.com

Keighley, Geoff. The Final Hours of Portal 2. 2011. ASIN B004XMZZKQ. Also available as iPad or Steam application.

archive.today

Braga, Matt. Q&A with Portal 2 writers Erik Wolpaw and Jay Pinkerton. National Post. 2011-04-19 [2011-04-20]. （原始内容存档于2013-01-04）.
Gaskill, Jake. E3 2010: Portal 2 Preview. G4TV. 2010-06-18 [2010-06-19]. （原始内容存档于2012-07-07）.
Saltzmann, Marc. Five things you didn't know about 'Portal 2'. USA Today. 2011-04-14 [2011-04-14]. （原始内容存档于2013-01-05）.

arstechnica.com

Kuchera, Ben. Portal 2 given story, British friend, deeper gameplay. Ars Technica. 2010-06-16 [2010-06-16]. （原始内容存档于2012-05-09）.
Webster, Andrew. Portal 2 is official, first image inside. 2010-03-05 [2010-03-05]. （原始内容存档于2010-03-07）.
Bright, Peter. Portal 2 Peer Review DLC: fun, but missing the magic. Ars Technica. 2011-10-09 [2011-10-11]. （原始内容存档于2011-10-09）.
Bastion on PC? Now you're thinking with portals. Ars Technica. 2011-08-22 [2011-08-23]. （原始内容存档于2012-08-27）.
Bright, Peter. Thinking on rails: why Portal 2 isn't as good as the original. Ars Technica. 2011-05-02 [2011-05-02]. （原始内容存档于2011-05-04）.

avclub.com

Mastrapa, Gus. Portal 2. A.V. Club. 2011-04-25 [2011-04-25]. （原始内容存档于2011-04-29）.

bbc.co.uk

Portal 2 wins best game at the Bafta Video Game Awards. BBC. 2012-03-16 [2012-03-16]. （原始内容存档于2012-03-16）.

bostonherald.com

Martin, Garrett. ‘Portal 2’ sure to gel with fans. Boston Herald（英语：Boston Herald）. 2011-04-25 [2011-05-01]. （原始内容存档于2012-10-05）.

cbsnews.com

'Portal 2,' 'Skyrim' top a thrilling year in games. Associated Press. 2011-12-21 [2011-12-21]. （原始内容存档于2012-02-02）.

cnn.com

edition.cnn.com

Frum, Larry. 'Portal 2' is a dark, humorous joy (and that's no lie). CNN. 2011-04-19 [2011-04-19]. （原始内容存档于2012-01-14）.

computerandvideogames.com

Portal 2 influenced by Left 4 Dead – Valve. Computer and Video Games. 2011-02-11 [2011-02-11]. （原始内容存档于2011-02-13）.
Jackson, Mike. Two more Portal 2 E3 gameplay videos. Computer and Video Games. 2010-06-29 [2010-07-01].
Valve drop Portal 2 co-op details. Computer and Video Games. 2011-03-31 [2011-03-31]. （原始内容存档于2011-04-05）.
McCormick, Richard. 10 incredible Portal 2 secrets you might have missed. PlayStation 3 Magazine（英语：PlayStation 3 Magazine）. 2011-07-17 [2011-07-17]. （原始内容存档于2011-07-20）.
Meet the real-life Chell from Portal 2. Computer and Video Games. 2011-03-29 [2011-04-20]. （原始内容存档于2011-04-05）.
Newell: Portal 2 'pretty much' ready for release. Computer and Video Games. 2011-02-19 [2011-02-20]. （原始内容存档于2011-02-22）.
Valve details PS3 Steam support for Portal 2. Computer and Video Games. 2011-04-13 [2011-04-13]. （原始内容存档于2011-04-16）.
Ingham, Tim. Valve 'no plans' for 3D, Move support in Portal 2. Computer and Video Games. 2010-06-22 [2010-06-22]. （原始内容存档于2012-01-05）.
Jackson, Mike. Portal 2 'In Motion' DLC out in US today, launch trailer. Computer & Video Games. 2012-11-06 [2012-11-06]. （原始内容存档于2012-11-09）.
Ivan, Tom. Narrowly beats The Elder Scrolls V: Skyrim on Xbox 360 to take the top review spot. Computer and Video Games. 2012-01-13 [2012-01-13]. （原始内容存档于2012-01-15）.

develop-online.net

Crossley, Rob. Valve on Portal 2. Develop. 2011-05-10 [2011-05-11]. （原始内容存档于2011-05-16）.

doi.org

Foroughi, Cyrus K.; Serraino, Carolyn; Parasuraman, Raja; Boehm-Davis, Deborah A. Can we create a measure of fluid intelligence using Puzzle Creator within Portal 2?. Intelligence. October 2016, 56: 58–64. doi:10.1016/j.intell.2016.02.011.
Shute, Valerie J.; Ventura, Matthew; Ke, Fengfeng. The power of play: The effects of Portal 2 and Lumosity on cognitive and noncognitive skills. Computers & Education. August 2014, 80: 58–67. doi:10.1016/j.compedu.2014.08.013.
Barr, Matthew. Video games can develop graduate skills in higher education students: A randomised trial. Computers & Education. May 2017, 113: 86–97. doi:10.1016/j.compedu.2017.05.016.

escapistmagazine.com

Arendt, Susan. Portal 2's Writer Didn't Try to Reinvent the Cake. The Escapist. 2011-03-14 [2011-03-14]. （原始内容存档于2011-03-16）.
Goldman, Tom. Valve: Portal's Chell is Silent Because It's Funnier. The Escapist. 2011-05-07 [2011-05-22]. （原始内容存档于2011-05-11）.
Gay, Gregory. Portal 2 Teleports to Shelves Next February. Escapist（英语：Escapist (magazine)）. 2010-08-18 [2011-04-21]. （原始内容存档于2010-08-21）.
The Escapist : Building Sequels Badly. Escapistmagazine.com. [2013-04-22]. （原始内容存档于2013-05-16）.

eurogamer.net

Bramwell, Tom. Portal 2 due out this Christmas. Eurogamer. 2010-03-05 [2010-03-05]. （原始内容存档于2010-03-07）.
Yin-Poole, Wesley. How Valve Opened Up Portal 2: Interview. Eurogamer. 2011-03-14 [2011-07-25]. （原始内容存档于2011-08-17）.
Welsh, Oli. The Portal 2 that never was. Eurogamer. 2012-03-08 [2013-10-08]. （原始内容存档于2013-09-28）.
Welch, Oli. Portal 2: "Let's make Caddyshack". Eurogamer. 2011-04-25 [2011-04-25]. （原始内容存档于2011-04-28）.
Welsh, Oli. The Portal 2 that never was. Eurogamer. 2012-03-08 [2012-03-08]. （原始内容存档于2013-09-28）.
Phillips, Tom. NASA launches Portal 2 character into orbit. Eurogamer. 2012-07-22 [2012-07-22]. （原始内容存档于2012-07-25）.
Minkley, Johnny. Being Nathan Drake – Interview. Eurogamer. 2011-05-09 [2011-05-09]. （原始内容存档于2011-05-12）.
Donlan, Christian. Portal 2 Hands-on. Eurogamer. 2011-02-04 [2011-02-04]. （原始内容存档于2011-02-07）.
Dutton, Fred. Valve offers Portal 2 soundtrack for free. Eurogamer. 2011-05-25 [2011-05-25]. （原始内容存档于2011-05-28）.
Dutton, Fred. Portal 2 DLC release date. Eurogamer. 2011-09-30 [2011-09-30]. （原始内容存档于2011-10-02）.
Matulef, Jeffrey. Portal 2: Songs To Test By (Collector's Edition) due next month. Eurogamer. 2012-09-25 [2012-12-23]. （原始内容存档于2013-01-02）.
Purchese, Rob. More Portal for sure – Valve. Eurogamer. 2008-01-31 [2008-01-30]. （原始内容存档于2012-03-10）.
Purchase, Robert. The first anyone had seen publicly of Portal 2 was relayed over this modem from 1987 from my kitchen. Eurogamer. 2013-06-07 [2013-06-07]. （原始内容存档于2013-06-10）.
Purchase, Robert. E3 Portal 2 event replaced by "surprise". Eurogamer. 2010-06-02 [2010-06-02]. （原始内容存档于2010-06-05）.
Dutton, Fred. Free Portal 2 DLC out next month. Eurogamer. 2011-08-18 [2011-08-18]. （原始内容存档于2011-08-28）.
Purchase, Robert. Portal 2 Peer Review DLC is 1.37GB. Eurogamer. 2011-10-04 [2011-10-04]. （原始内容存档于2011-10-05）.
Matulef, Jeffrey. Portal 2 and Left 4 Dead receive Xbox One backwards compatibility. Eurogamer. 2016-06-16 [2016-06-16]. （原始内容存档于2016-06-17）.
Yin-Poole, Wesley. Why Portal 2 doesn't support PS Move. Eurogamer. 2011-02-25 [2011-02-25]. （原始内容存档于2011-02-28）.
Yin-Poole, Wesley. Portal 2 PS3, Steam cross-platform play. Eurogamer. 2011-01-18 [2010-01-18]. （原始内容存档于2016-03-03）.
Matulef, Jeffrey. Portal 2's Move-based In Motion DLC gets a free co-op campaign. Eurogamer. 2013-06-06 [2013-06-06]. （原始内容存档于2013-06-09）.
Welsh, Oli. Portal 2. Eurogamer. 2011-04-19 [2011-04-19]. （原始内容存档于2012-03-10）.
Dutton, Fred. Portal 2 Metacritic user score pounded. Eurogamer. 2011-04-19 [2011-04-19]. （原始内容存档于2011-04-25）.
Eurogamer's Game of the Year 2011. Eurogamer. 2011-12-31 [2011-12-31]. （原始内容存档于2012-01-07）.
Dutton, Fred. NPD: Mortal Kombat beats Portal 2 in US. Eurogamer. 2011-05-12 [2011-06-27]. （原始内容存档于2011-05-17）.
Dutton, Fred. Crysis 2 racks up three million sales. Eurogamer. 2011-07-26 [2011-07-26]. （原始内容存档于2011-08-07）.

ew.com

popwatch.ew.com

Young, John. 'Portal 2' videogame review: Physics is phunny. Entertainment Weekly. 2011-04-20 [2011-04-20]. （原始内容存档于2011-04-20）.

fastcompany.com

Ohannessian, Kevin. Portal 2's Creators On Crafting Games Through Experiential Stories. Fast Company. 2011-04-27 [2011-04-27]. （原始内容存档于2011-04-30）.
Salen, Katie. How Portal 2 Developers Became The Best 6th Grade Physics Teachers Ever. Fast Company（英语：Fast Company (magazine)）. 2012-11-13 [2012-11-14]. （原始内容存档于2012-11-16）.

g4tv.com

Johnson, Stephen. PAX Prime 2010: Portal 2 Co-Op Hands-On Impressions. G4 (电视频道). 2010-09-03 [2010-09-03]. （原始内容存档于2012-01-15）.
Johnson, Stephen. Portal 2 Easter Egg Video: Finding Borealis. G4 (电视频道). 2011-04-20 [2011-04-20]. （原始内容存档于2012-10-17）.
Vinson, Dana. Portal 2 Ending Song: Want You Gone by Jonathan Coulton Video and Lyrics. G4 (电视频道). 2011-04-20 [2011-04-21]. （原始内容存档于2012-10-17）.
Portal. Face Time. 2008-02-21 [2011-06-26]. G4TV. （原始内容存档于2012-10-17）.
Gaskill, Jake. Rumor: Valve To Make Portal 2 Announcement During GDC 2010. X-Play（英语：X-Play）. 2010-03-03 [2010-03-03]. （原始内容存档于2012-10-17）.
Webb, Morgan. Portal 2 Review – Xbox 360. G4 (电视频道). 2011-04-19 [2011-04-19]. （原始内容存档于2012-03-10）.

e3.g4tv.com

Gaskill, Jake. E3 2010: Portal 2 Preview. G4TV. 2010-06-18 [2010-06-19]. （原始内容存档于2012-07-07）.

gamasutra.com

Sheffield, Brandon. Rewarding The Players: Valve On Portal 2. Gamasutra. 2010-11-08 [2010-11-10]. （原始内容存档于2010-11-10）.
Curtis, Tom. GDC 2012: Portal 2: Making a sequel to a 'perfect' game. Gamasutra. 2012-03-08 [2012-03-08]. （原始内容存档于2016-09-24）.
Remo, Chris. Synthesizing Portal 2. Gamasutra. 2010-09-20 [2010-09-20]. （原始内容存档于2012-03-10）.
Video: Making Portal 2, the sequel to a game that didn't need one. Gamasutra. 2012-07-17 [2012-07-17]. （原始内容存档于2012-07-20）.
Remo, Chris. Portal Designer Kim Swift Leaves Valve For Dark Void Dev. Gamasutra. 2009-12-07 [2010-07-09]. （原始内容存档于2010-05-10）.
Alexander, Leigh. Valve's Wolpaw Offers Behind-The-Scenes Peek Into Portal 2. Gamasutra. 2011-05-06 [2011-05-06]. （原始内容存档于2011-05-08）.
Remo, Chris. Portal 2's Wolpaw: 'I Do Not Want To Resurrect A Three-Year-Old Meme'. Gamasutra. 2010-06-18 [2010-06-18]. （原始内容存档于2010-06-20）.
Foster, Adam. Alternate Reality Game puzzle design. Gamasutra. 2013-06-18 [2013-06-18]. （原始内容存档于2013-07-01）.
Graff, Kris. EA, Valve Confirm Distribution Agreement For Portal 2. Gamasutra. 2010-12-22 [2010-12-22]. （原始内容存档于2010-12-25）.
Orland, Kyle. Valve Offering Free Portal 2 DLC On All Available Platforms This Summer. Gamasutra. 2011-04-29 [2011-04-29]. （原始内容存档于2011-05-01）.
Cifaldi, Frank. Portal 2 Sees Map Editor Next Year. Gamasutra. 2011-10-21 [2011-10-21]. （原始内容存档于2011-10-23）.
Alexander, Leigh. Valve helps educators Teach With Portals. Gamasutra. 2012-06-20 [2012-06-20]. （原始内容存档于2012-06-22）.
Portal’s GLaDOS Invades the World of Defense Grid! (新闻稿). Hidden Path Entertainment. [2011-12-02]. （原始内容存档于2012-01-13）.
Morris, Chris. Behind The Scenes Of The Portal Proposal. Gamasutra. 2011-08-26 [2011-08-26]. （原始内容存档于2011-09-25）.
Cowen, Danny. Critical Reception: Valve's Portal 2. Gamasutra. 2011-04-20 [2011-04-20]. （原始内容存档于2011-04-23）.
Gamasutra's Best Of 2011: Top 10 Games Of The Year. Gamasutra. 2011-12-23 [2011-12-23]. （原始内容存档于2012-11-03）.
Orland, Kyle. Portal 2 Leads Spike TV VGA Nominees With 12 Nods. Gamasutra. 2011-11-16 [2011-11-16]. （原始内容存档于2011-11-19）.
Portal 2, Skyrim, Bastion lead finalists for 12th annual Game Developers Choice Awards. Gamasutra. 2012-01-05 [2012-01-05]. （原始内容存档于2012-01-08）.
Skyrim wins Game of the Year at GDC Awards. Gamasutra. 2012-03-08 [2012-03-08]. （原始内容存档于2012-03-09）.
Curtis, Tom. Battlefield 3, Portal 2, more win big at 10th annual G.A.N.G. Awards. Gamasutra. 2012-03-14 [2012-03-14]. （原始内容存档于2012-03-17）.
Cowen, Danny. Saling The World: Portal 2 Leads Cross-Platform Charts Worldwide. Gamasutra. 2011-04-22 [2011-06-27]. （原始内容存档于2011-05-08）.
Cowen, Danny. Saling The World: Mortal Kombat Overtakes Portal 2 Stateside. Gamasutra. 2011-04-29 [2011-04-29]. （原始内容存档于2011-04-30）.
Graft, Kris. NPD: May U.S. Retail Game Industry Sales Lowest Since Oct. '06. 2001-06-13 [2011-06-27]. （原始内容存档于2011-06-17）.
Rose, Mike. Portal 2 Scores Valve First Ever Top Spot In UK Sales Charts. Gamasutra. 2011-04-26 [2011-04-26]. （原始内容存档于2011-04-29）.
Rose, Mike. Portal 2 Holds On To Top Spot For Second Week In UK Sales Charts. Gamasutra. 2011-05-03 [2011-05-03]. （原始内容存档于2011-05-06）.
Matthews, Matt. Analysis: Did The PSN Outage Hurt U.S. PS3 Hardware Sales?. Gamasutra. 2011-06-21 [2011-06-27]. （原始内容存档于2014-10-11）.
Graft, Kris. Developers Say PSN Outage Affecting Sales, But Remain Hopeful. Gamasutra. 2001-04-26 [2011-06-27]. （原始内容存档于2011-08-11）.
Orland, Kyle. Newell: Portal 2 Has Sold 3 Million Copies. Gamasutra. 2011-06-22 [2011-06-22]. （原始内容存档于2011-06-25）.
Nutt, Christian. The Valve Way: Gabe Newell And Erik Johnson Speak. Gamasutra. 2011-08-29 [2011-08-30]. （原始内容存档于2011-09-30）.
Caoili, Eric. Portal 2 has sold over 4M copies. Gamasutra. 2012-05-08 [2012-05-08]. （原始内容存档于2012-05-08）.

gamecriticsawards.com

2010 Winners. Game Critics Awards（英语：Game Critics Awards）. 2010-07-06 [2010-07-06]. （原始内容存档于2017-07-02）.

gameinformer.com

Gonzalez, Annette. Portal 2 For Two. Game Informer. 2010-03-05 [2010-03-05]. （原始内容存档于2010-03-07）.
Reeves, Ben. Thinking With Portals: Making a Portal 2 Test Chamber. Game Informer. 2010-03-17 [2010-03-17]. （原始内容存档于2012-03-10）.
Ryckert, Dan. From Narbacular Drop To Portal. Game Informer. 2010-03-08 [2010-03-08]. （原始内容存档于2010-03-10）.
Turi, Tim. Chell Almost Married A Turret In Portal 2. Game Informer. 2012-09-01 [2012-09-06]. （原始内容存档于2012-09-05）.
Reeves, Ben. Redesigning Portal: Valve's Artist Speaks. Game Informer. 2010-03-22 [2010-03-22]. （原始内容存档于2012-03-10）.
Kollar, Phil. Portal 2 Has A Release Date And A New Voice Actor. Game Informer. 2010-08-18 [2010-08-18]. （原始内容存档于2012-03-10）.
Helgeson, Matt. Portal 2's Perpetual Testing Initiative Off To A Good Start. Game Informer. 2012-05-10 [2012-05-11]. （原始内容存档于2012-05-12）.
Biessener, Adam. Portal 2. Game Informer. 2011-04-18 [2011-04-19]. （原始内容存档于2012-03-10）.
Cork, Jeff. Skyrim, Portal 2, Arkham City Won Big At VGAs. Game Informer. 2011-12-11 [2011-12-11]. （原始内容存档于2012-01-06）.
Bertz, Matt. Skyrim Dominates The 15th Annual Interactive Achievement Awards. Game Informer. 2012-02-09 [2012-02-09]. （原始内容存档于2012-02-11）.
Hillard, Kyle. Fan Made Portal 2 Mod Looks Good Enough To Be From Valve. Game Informer. 2015-01-31 [2015-05-10]. （原始内容存档于2015-07-02）.

gameological.com

Agnello, Anthony John. Funny People: Erik Wolpaw, Portal 2 head writer. The A.V. Club. 2012-07-10 [2012-07-10]. （原始内容存档于2012-07-13）.

gamepro.com

Maiberg, Emanuel. Portal 2 preview. Gamepro. 2011-01-21 [2011-01-21]. （原始内容存档于2011-11-30）.
Davidson, Pete. Play indie games, help Portal 2 release early. GamePro. 2011-04-15 [2011-04-15]. （原始内容存档于2011-11-30）.
Davidson, Pete. Portal 2 goodies now on sale. GamePro. 2011-04-19 [2011-04-19]. （原始内容存档于2011-11-30）.

gamer.com.tw

gnn.gamer.com.tw

RU. 集結《傳送門》一、二代的《傳送門：同伴合集》今年將在 Switch 平台上市. 巴哈姆特電玩資訊站. 2022-02-10 [2022-02-13]. （原始内容存档于2022-02-16）.

gamerankings.com

Portal 2 for PC. GameRankings. [2011-04-19]. （原始内容存档于2012-03-10）.
Portal 2 for X360. GameRankings. [2011-05-08]. （原始内容存档于2017-01-06）.
Portal 2 for PS3. GameRankings. [2011-05-08]. （原始内容存档于2016-12-10）.

gamesindustry.biz

Jenkins, David. Fans protest Portal 2 on Metacritic. GamesIndustry.biz. 2011-04-20 [2011-04-20]. （原始内容存档于2011-04-23）.
Handrahan, Matthew. Portal 2 voted GOTY at Golden Joysticks. GamesIndustry.biz. 2011-10-21 [2011-10-21]. （原始内容存档于2011-10-24）.

gamespot.com

Sinclair, Brendan. Writing Valve's silent protagonists. Gamespot. 2011-10-12 [2011-10-12]. （原始内容存档于2013-11-04）.
Watters, Chris. Portal 2 Review. GameSpot. 2011-04-19 [2015-09-07]. （原始内容存档于2011-10-29）.

e3.gamespot.com

Thorsen, Tor. Portal 2, Steamworks PS3-bound in 2011. Gamespot. 2010-06-15 [2010-06-16]. （原始内容存档于2012-03-13）.

gamespy.com

pc.gamespy.com

Grayson, Nathan. Impressions: Skyrim's Portal 2 Mod. GameSpy. 2012-02-07 [2012-02-07]. （原始内容存档于2012-02-09）.
Sharkley, Mike. Valve Announces Documentary Film on Pro Gaming, Portal 2 Co-Op Map Maker. GameSpy. 2012-08-17 [2012-08-17]. （原始内容存档于2013-02-03）.

gamespy.com

GameSpy's Best of E3 2010 Awards. Gamespy. 2010-06-25 [2010-06-30]. （原始内容存档于2012-03-10）.

gametrailers.com

Valve Releases the Pressure. GT.TV with Geoff Keighley. 2008-03-01 [2011-06-26]. GameTrailers. （原始内容存档于2010-12-31）.

geekbeat.tv

McLeod, Gord. Review: The Razer Hydra Savages Portal 2 (In a Good Way!). GeekBeat.tv. 2011-06-24 [2011-06-24]. （原始内容存档于2011-06-27）.

geeky-gadgets.com

Horsey, Jillian. Portal 2 First DLC Content, Designed Specifically For Razer Hydra Controller. 2011-06-20 [2011-06-24]. （原始内容存档于2011-06-25）.

giantbomb.com

Navarro, Alex. 'So, Here's Something Pretentious!' – Anecdotes and Thoughts from Erik Wolpaw's Portal 2 Discussion at the NYU Game Center. Giant Bomb. 2011-05-06 [2011-05-06]. （原始内容存档于2011-05-09）.
Klepek, Patrick. Portal 2 Has Sold More Than 3 Million Copies. Giant Bomb. 2011-06-22 [2014-12-16]. （原始内容存档于2012-10-18）.

guardian.co.uk

Stewart, Keith. E3 2010: Portal 2 preview. The Guardian. 2010-06-18 [2010-06-21]. （原始内容存档于2010-06-21）.
Cowen, Nick. Portal 2 – Review. The Guardian. 2011-04-19 [2011-04-19]. （原始内容存档于2011-04-23）.
Freeman, Will. Portal 2 – review. The Observer. 2011-04-23 [2011-04-23]. （原始内容存档于2011-04-26）.

ign.com

ps3.ign.com

Hatfield, Damien. E3 2010: Portal 2 Preview. IGN. 2010-06-16 [2010-06-16]. （原始内容存档于2010-06-18）.
Miller, Greg. PAX: Portal 2 Nabs J. K. Simmons. IGN. 2011-03-11 [2011-03-11]. （原始内容存档于2012-03-10）.

pc.ign.com

Griliopoulos, Dan. Portal 2: Test Subjects. IGN. 2011-03-28 [2011-03-28]. （原始内容存档于2011-08-29）.
Buchanan, Levi. CES: Razer Gets Portal 2 Exclusives. IGN. 2011-01-08 [2011-01-08]. （原始内容存档于2012-03-10）.

xbox360.ign.com

Gies, Arthur. Portal 2 Multiplayer Preview. IGN. 2010-09-06 [2010-09-06]. （原始内容存档于2012-01-25）.

uk.xbox360.ign.com

Onyett, Charles. Jumping into Portal 2. IGN. 2011-01-14 [2011-01-14]. （原始内容存档于2011-01-17）.

comics.ign.com

Esposito, Joey. Portal 2: Lab Rat – Part 1. IGN. 2011-04-08 [2011-04-11]. （原始内容存档于2011-04-10）.

games.ign.com

E3 2010: Best of E3 Awards. IGN. 2010-06-17 [2010-06-30]. （原始内容存档于2012-03-10）.

uk.pc.ign.com

Onyett, Charles. Portal 2 Review. IGN. 2011-04-19 [2011-04-19]. （原始内容存档于2012-03-10）.

ign.com

IGNs 2011 Game of the Year Video. IGN. 2012-01-17 [2012-01-17]. （原始内容存档于2012-01-20）.

interactive.org

15th Annual Interactive Achievement Awards Finalists (PDF). Academy of Interactive Arts & Sciences. 2012-01-13 [2012-01-13]. （原始内容存档 (PDF)于2012-01-13）.

jonathancoulton.com

Coulton, Jonathan. FAQs About the Portal 2 Song. jonathancoulton.net. 2011-04-29 [2011-05-20]. （原始内容存档于2011-05-05）.

joystiq.com

Grant, Christopher. Preview: Portal 2 (co-op). Joystiq. 2010-06-21 [2010-06-21]. （原始内容存档于2012-03-10）.
Fletcher, JC. Portal 2 Easter egg: Valve never meta-ARG it didn't like. Joystiq. 2011-04-20 [2011-04-20]. （原始内容存档于2011-04-23）.

kotaku.com

Totilo, Stephan. Valve Plans To Bridge Portal And Portal 2 With A Surprise, Keep Gordon Freeman Out Of It. Kotaku. 2011-03-11 [2011-03-11]. （原始内容存档于2012-10-18）.
Tolito, Stephen. Portal 2 Wasn’t Going to Include Portals, According To New iPad App. Kotaku. 2011-04-21 [2011-05-06]. （原始内容存档于2012-02-01）.
Plunkett, Luke. Casting call reveals Portal 2 details. Kotaku. 2008-06-10 [2008-07-18]. （原始内容存档于2008-06-24）.
Plunkett, Luke. More details on Portal 2's bad guy. Kotaku. 2008-06-10 [2008-07-18]. （原始内容存档于2008-06-24）.
McWheator, Michael. The New Look For Portal 2's Heroine Explained. Kotaku. 2011-02-23 [2011-02-23]. （原始内容存档于2011-07-08）.
Plunkett, Luke. Portal 2 Hijacks Blue Screen of Death At GDC Awards. Kotaku. 2010-03-11 [2010-03-12]. （原始内容存档于2010-03-14）.
McWhertor, Michael. Now You Can Make Your Own Custom Portal 2 Puzzles (I Said NOW!!). Kotaku. 2011-05-10 [2011-06-24]. （原始内容存档于2011-05-14）.
Tolito, Stephan. Valve Tinkering With an Excellent Portal 2 Feature That Talks Back. Kotaku. 2011-10-18 [2011-10-19]. （原始内容存档于2011-10-20）.
Narcisse, Evan. Valve Gives Away Portal 2 for Free to Teachers with ‘Steam for Schools’. Kotaku. 2012-06-20 [2012-06-20]. （原始内容存档于2012-06-23）.
Plunkett, Luke. Portal Picks Up a PlayStation Move Controller, Returns to the PS3 With New Levels. Kotaku. 2012-06-05 [2012-06-05]. （原始内容存档于2012-06-08）.
Tolito. The People are Panning Portal2. Kotaku. 2011-04-19 [2011-04-19]. （原始内容存档于2011-09-27）.
Fahey, Mike. Portal 2 Takes Kotaku’s 2011 Game of the Year Award for Science, You Monster. Kotaku. 2012-01-02 [2012-01-02]. （原始内容存档于2012-01-07）.

kotaku.com.au

Portal 2 Gets An Australian Release Date. Kotaku. 2011-01-07 [2011-03-15]. （原始内容存档于2011-03-11）.
Plunkett, Luke. Proof That Nolan North Is In Too Many Damn Video Games. Kotaku. 2011-05-02 [2011-05-14]. （原始内容存档于2012-02-17）.

metacritic.com

Portal 2 for PC Reviews, Ratings, Credits, and More. Metacritic. [2011-04-23]. （原始内容存档于2012-03-10）.
Portal 2 for Xbox 360 Reviews, Ratings, Credits, and More at Metacritic. Metacritic. [2011-04-23]. （原始内容存档于2016-12-12）.
Portal 2 for PlayStation 3 Reviews, Ratings, Credits, and More at Metacritic. Metacritic. [2011-05-02]. （原始内容存档于2017-01-13）.

metro.co.uk

Phillips, Tom. Portal 2 to get early release on Steam?. The Metro. 2011-04-13 [2011-04-13]. （原始内容存档于2011-04-17）.
metrowebukmetro. Portal 2 hit by user review backlash on Metacritic. Metro. 2011-04-20 [2011-04-20]. （原始内容存档于2011-04-24）.

mirror.co.uk

Lynch, Kevin. Portal 2, The Witcher 2 and Uncharted 3: Drake's Deception... the top 10 video games of 2011. Daily Mirror. 2011-12-23 [2011-12-23]. （原始内容存档于2012-11-03）.

msn.com

technolog.msnbc.msn.com

Benedetti, Winda. Dear Valve, 'Portal 2' better be awesome. But no pressure.. MSNBC. 2010-09-08 [2010-09-08]. （原始内容存档于2010-09-10）.

mtv.com

multiplayerblog.mtv.com

Frushtick, Russ. Behold Some Amazing 'Portal 2' Cube Tricks. MTV. 2011-04-29 [2011-04-29]. （原始内容存档于2011-05-01）.
Frushtick, Russ. The Very Beginning Of 'Portal 2' Revealed. MTV. 2011-02-17 [2011-02-17]. （原始内容存档于2011-02-21）.

nationalpost.com

arts.nationalpost.com

Braga, Matt. Q&A with Portal 2 writers Erik Wolpaw and Jay Pinkerton. National Post. 2011-04-19 [2011-04-20]. （原始内容存档于2013-01-04）.

news.com.au

Ramadge, Andrew. GLaDOS, the greatest video game villain of all time, is back for more cake and chaos in Portal 2. News.com.au（英语：News.com.au）. 2011-02-21 [2011-03-23]. （原始内容存档于2011-04-03）.

next-gen.biz

Brown, Nathan. Potato Sack Developers Helped Design Portal 2 ARG. Edge. 2011-04-20 [2011-04-20]. （原始内容存档于2011-04-23）.
Portal 2 Review. Edge. 2011-04-19 [2011-04-30]. （原始内容存档于2011-08-29）.

nowgamer.com

Portal 2 Mod Levels 'For All Platforms'. NowGamer. 2001-01-24 [2011-06-24]. （原始内容存档于2012-01-20）.

npr.org

Larchuk, Travis. Portal 2: A Student Video Game Project, All Grown Up. NPR. 2011-04-19 [2011-06-18]. （原始内容存档于2011-06-25）.

nytimes.com

Schiesel, Seth. Physics, With Wormholes by You. New York Times. 2011-05-10 [2011-05-10]. （原始内容存档于2011-05-13）.

artsbeat.blogs.nytimes.com

Schiesel, Seth. Skyrim Wins Video Game Critics Award. New York Times. 2012-02-03 [2012-02-07]. （原始内容存档于2012-02-07）.

pastemagazine.com

Spicer, Nathan. The National Release "Exile Vilify" off Portal 2 Soundtrack. Paste Magazine（英语：Paste Magazine）. 2011-04-19 [2011-04-19]. （原始内容存档于2011-04-24）.
Hamilton, Kirk. Portal 2 Review (Multi-Platform). Paste（英语：Paste (magazine)）. 2011-04-26 [2011-05-05]. （原始内容存档于2011-04-29）.

pcgamer.com

Francis, Tom. Interview: Valve on their insane Portal 2 ideas. PC World. 2010-09-10 [2010-09-10]. （原始内容存档于2012-03-10）.
Purslow, Matt. Portal 2 Secrets Guide. PC Gamer. 2011-04-24 [2020-02-24]. （原始内容存档于2020-12-14）（美国英语）.
Senior, Tom. 12 new high-res Portal 2 screenshots confirm Companion Cube comeback. PC Gamer. 2011-02-28 [2011-03-01]. （原始内容存档于2011-11-24）.
Stanton, Rich. Erik Wolpaw on Portal 2’s ending: "the (spoiler) is probably lurking out there somewhere". PC Gamer. 2011-04-26 [2011-04-26]. （原始内容存档于2011-04-30）.
Francis, Tom. Valve’s E3 surprise is... oh. Portal 2 on PS3. PC Gamer. 2010-06-15 [2011-06-26]. （原始内容存档于2011-04-26）.
Senior, Tom. Portal 2 levels appear in potato sack games, clues suggest Portal 2 could be released early. PC Gamer. 2011-04-13 [2011-04-13]. （原始内容存档于2011-04-16）.
Senior, Tom. Portal 2 has hidden interactive Super 8 teaser level. PC Gamer. 2011-04-19 [2011-04-19]. （原始内容存档于2011-04-22）.
Senior, Tom. Portal 2 has item store, trading coming soon. PC Gamer. 2011-04-19 [2011-04-19]. （原始内容存档于2011-04-29）.
Senior, Tom. Portal 2 mapping contest kicks off. PC Gamer. 2011-05-26 [2011-10-11]. （原始内容存档于2011-08-07）.
Senior, Tom. Portal 2 Puzzle Creator in internal beta testing now, will use Steam Workshop. PC Gamer. 2012-03-14 [2012-03-14]. （原始内容存档于2012-03-16）.
Marks, Tom. Portal Pinball: hands-on with Pinball FX2's new Portal themed table. PC Gamer. 2015-05-05 [2015-05-05]. （原始内容存档于2015-05-08）.
Stapleton, Dan. Portal 2 review. PC Gamer. 2011-04-19 [2011-04-26]. （原始内容存档于2015-12-31）.
Valve reveals Steam Awards nominees. PC Gamer. [2018-06-10]. （原始内容存档于2018-06-12）.
Savage, Phil. Portal 2 mod Aperture Tag releases on Steam, for a price. PC Gamer. 2014-07-16 [2019-05-27]. （原始内容存档于2019-05-27）.
Portal 2 mod Thinking With Time Machine now available on Steam. PC Gamer. 2014-04-22 [2019-05-27]. （原始内容存档于2019-05-27）.

pcworld.com

Wawro, Alex. Anatomy of an Alternate-Reality Game. GamePro. 2010-04-26 [2010-05-13]. （原始内容存档于2010-05-01）.
Peckham, Matt. Valve Apologizes For Sony-Bashing, Announces Portal 2 for PS3. PC World. 2010-06-15 [2010-06-15]. （原始内容存档于2010-06-19）.

polygon.com

McWhertor, Michael. Portal, Dr. Who, The Simpsons and more confirmed for Lego Dimensions. Polygon. 2015-05-10 [2015-05-10]. （原始内容存档于2015-05-12）.
Tach, Dave. Valve details Teach with Portals, Steam for Schools educational initiatives. Polygon. 2012-06-30 [2016-10-25]. （原始内容存档于2016-10-22）.

rockpapershotgun.com

Walker, John. Valve On Portal 2: Spoiler Interview Part One. Rock Paper Shotgun. 2011-04-27 [2011-04-28]. （原始内容存档于2011-04-29）.
Yang, Robert. Specially Level With Me, Adam Foster – Part Two. Rock Paper Shotgun. 2012-12-06 [2012-12-06]. （原始内容存档于2012-12-09）.
Walker, John. Valve On Portal 2: Spoiler Interview Part One. Rock Paper Shotgun. 2011-04-27 [2011-04-27]. （原始内容存档于2011-04-29）.
Walker, John. Valve on Portal 2: Spoiler Interview Part Two. Rock Paper Shotgun. 2011-04-28 [2011-04-28]. （原始内容存档于2011-04-30）.
Meer, Alec. 13,000 Lines of Chat in Portal 2. Rock Paper Shotgun. 2011-01-14 [2011-01-14]. （原始内容存档于2011-01-16）.
Walker, John. The National To Provide Song For Portal 2. Rock, Paper, Shotgun. 2011-03-11 [2011-03-11]. （原始内容存档于2012-03-10）.
Walker, John. Let's Address Some Portal 2 Nonsense. Rock Paper Shotgun. 2011-04-19 [2011-04-19]. （原始内容存档于2011-04-21）.

shacknews.com

de Matos, Xas. Portal 2 E3 Demo Videos Part 4 and Part 5 Incite Anger. Shacknews. 2010-06-30 [2010-07-01]. （原始内容存档于2011-06-14）.
Leahy, Brian. Valve Hires DigiPen Team; Seemingly for Portal 2. Shacknews. 2010-03-08 [2010-03-08]. （原始内容存档于2011-05-18）.
de Matos, Xav. Interview: Portal 2 project lead Joshua Weier and writer Erik Wolpaw. Shacknews. 2011-03-21 [2011-03-21]. （原始内容存档于2011-03-23）.
Faylor, Chris. GDC 08: Portal Creators on Writing, Multiplayer, Government Interrogation Techniques. Shacknews. 2008-02-23 [2008-02-23]. （原始内容存档于2011-04-24）.
O'Connor, Alice; Leahy, Brian. Portal Patch Adds Morse Code, Achievement – Portal 2 Speculation Begins (Updated). Shacknews. 2010-03-01 [2010-03-02]. （原始内容存档于2012-08-06）.
Faylor, Chris. Portal Mystery Deepens with Second Update. Shacknews. 2010-03-03 [2010-03-03]. （原始内容存档于2011-03-20）.
Faylor, Chris. Valve Delays Portal 2, Confirms E3 Surprise Is 'PORTAL-2-THEMED-FOR-GOD'S SAKE'. Shacknews. 2010-06-09 [2010-06-09]. （原始内容存档于2011-04-09）.
de Matos, Xav. Portal 2 Delayed to 'The Week of April 18'. Shacknews. 2010-11-18 [2010-11-18]. （原始内容存档于2011-03-07）.
Faylor, Chris. Steam Coming to Mac in April, Portal 2 This Fall. Shacknews. 2010-03-08 [2010-03-08]. （原始内容存档于2012-03-10）.
O'Conner, Alice. Skyrim gets HD texture pack, Portal 2 Space Sphere. Shacknews. 2012-02-07 [2012-02-07]. （原始内容存档于2012-02-08）.
Watts, Steve. Portal 2 on PS3 Will Not Feature Move Support (Updated). Shacknews. 2011-02-17 [2011-02-17]. （原始内容存档于2011-04-04）.

shoptonews.net

Anderson, Joe. Has PSN outage affected Portal 2 PS3 sales?. ShopToNews. 2011-04-26 [2011-06-27]. （原始内容存档于2012-05-12）.

sina.com.cn

games.sina.com.cn

大众软件：透析《传送门2》的乐趣宝库_单机游戏_新浪游戏_新浪网. games.sina.com.cn. [2020-02-24]. （原始内容存档于2020-08-07）.

steampowered.com

store.steampowered.com

The Steam Awards. Steam. [2018-06-10]. （原始内容存档于2018-06-12）.

telegraph.co.uk

Brown, David. Portal 2 developer interview: Chet Falisek and Erik Wolpaw. The Daily Telegraph. 2011-03-04 [2011-03-04]. （原始内容存档于2011-03-09）.
Hoggins, Tom. Portal 2 Review. The Daily Telegraph. 2011-04-19 [2011-04-19]. （原始内容存档于2011-04-19）.

thefinalhoursofportal2.com

Keighley, Geoff. The Final Hours of Portal 2 blog is live. [2011-06-18]. （原始内容存档于2011-05-29）.

theglobeandmail.com

Sapieha, Chad. Top five GLaDOS insults in Portal 2. The Globe and Mail. 2011-04-20 [2011-04-20]. （原始内容存档于2011-04-23）.
Sapieha, Chad. Portal 2 is for smarty-pants only. Globe and Mail. 2011-05-01 [2011-05-01]. （原始内容存档于2011-05-03）.

theverge.com

McElroy, Griffin. 'Portal 2' gets level creation tools May 8th for PC and Mac. Polygon. 2012-04-26 [2012-04-26]. （原始内容存档于2012-04-27）.

thinkwithportals.com

LAB RAT. www.thinkwithportals.com. [2020-02-24]. （原始内容存档于2020-12-17）.

time.com

techland.time.com

Narcisse, Evan. Custom 'Portal 2' Video Game Level Built for Marriage Proposal. Time. 2011-08-23 [2011-08-23]. （原始内容存档于2011-09-19）.
Narcisse, Evan. Portal 2 Review: Our First Perfect 10. Time. 2011-04-19 [2011-04-19]. （原始内容存档于2013-11-10）.

time.com

Portal 2 – The Top 10 Everything of 2011 – TIME. Time. 2011-12-07 [2011-12-09]. （原始内容存档于2011-12-09）.

usatoday.com

content.usatoday.com

Molina, Brett. 'Portal 2': A closer look at co-operative play. USA Today. 2011-04-19 [2011-04-20]. （原始内容存档于2011-04-26）.
Saltzmann, Marc. Five things you didn't know about 'Portal 2'. USA Today. 2011-04-14 [2011-04-14]. （原始内容存档于2013-01-05）.
Molina, Brett. Trailer Park: 'Portal 2'. USA Today. 2011-03-22 [2011-03-22]. （原始内容存档于2011-03-26）.
Molina, Brett. Free DLC for 'Portal 2' launching this summer. USA Today. 2011-04-29 [2011-04-29]. （原始内容存档于2011-05-04）.
Molina, Brett. 'Portal 2' puzzle creator launches May 8. USA Today. 2012-04-26 [2012-04-26]. （原始内容存档于2012-05-01）.
Snider, Mike. E3 2010: Game Critics Awards nominees announced. USA Today. 2010-06-29 [2010-06-30]. （原始内容存档于2012-03-10）.
Molina, Brett. Review: 'Portal 2' aces the sequel test. USA Today. 2011-04-19 [2011-04-19]. （原始内容存档于2011-04-20）.
Molina, Brett. 'Batman,' 'L.A. Noire' lead BAFTA game award nods. USA Today. 2012-02-16 [2012-02-21]. （原始内容存档于2012-02-19）.

valvesoftware.com

Portal 2 Coming to Sony Playstation 3. Valve. 2010-06-15 [2010-06-16]. （原始内容存档于2010-06-28）.
Vlachos, Alex. Water Flow in Portal 2 (PDF). SIGGRAPH 2010. 2010-07-28 [2010-08-10]. （原始内容 (PDF)存档于2010-08-20）.

vg247.com

Hillier, Brenna. Portal 2 Linux now in open beta. VG247. 2014-02-26 [2014-03-23]. （原始内容存档于2016-05-03）.
Nunneley, Stephany. Portal 2 E3 demo: final parts 6 and 7 out now. VG247. 2010-07-01 [2010-07-01]. （原始内容存档于2010-07-04）.
Hillier, Brenna. Portal 2 update adds Big Picture split-screen. VG247. 2012-11-21 [2012-11-21]. （原始内容存档于2012-11-28）.
Krantzl, Justin. Portal 2 releases – Unreview, uninterview, unstudiovisit. VG247. 2011-04-19 [2011-04-20]. （原始内容存档于2011-04-20）.
Nunneley, Stephany. Valve’s not "giving up on single-player at all," plans to add more social features to titles. VG247. 2011-05-07 [2016-10-28]. （原始内容存档于2014-04-20）.
Hillier, Brenna. Wolpaw: Players Don't Care About Portal's Chell. VG24/7. 2011-03-14 [2011-06-20]. （原始内容存档于2011-07-17）.
Greyson, Nathan. Portal 2 to release early? Potato sack ARG signs point to "yes". VG247. 2011-04-13 [2011-04-13]. （原始内容存档于2011-04-16）.
Hillier, Brenna. No more potatoes: Portal 2 available right now on Steam. VG247. 2011-04-18 [2011-04-18]. （原始内容存档于2011-04-20）.
Hillier, Brenna. Valve's in-house Portal 2 ad the result of "copycat" agency treatments (Update). VG247. 2011-03-17 [2011-03-17]. （原始内容存档于2012-03-10）.
Nunneley, Stephany. Core Portal 2 game is the same "whether you buy it on PS3 or 360", says Valve. VG247. 2011-01-22 [2011-01-24]. （原始内容存档于2012-03-10）.
Anderson, Joe. Spike VGA 2010 winners – Red Dead Redemption scoops GOTY. VG247. 2010-12-10 [2011-05-27]. （原始内容存档于2011-04-16）.
Nunneley, Stephany. 2012 Golden Joystick Awards – Skyrim wins Ultimate Game of the Year. VG247. 2012-10-26 [2012-10-26]. （原始内容存档于2012-11-23）.

web.archive.org

Bramwell, Tom. Portal 2 due out this Christmas. Eurogamer. 2010-03-05 [2010-03-05]. （原始内容存档于2010-03-07）.
Portal 2 Coming to Sony Playstation 3. Valve. 2010-06-15 [2010-06-16]. （原始内容存档于2010-06-28）.
Portal 2 Gets An Australian Release Date. Kotaku. 2011-01-07 [2011-03-15]. （原始内容存档于2011-03-11）.
Hillier, Brenna. Portal 2 Linux now in open beta. VG247. 2014-02-26 [2014-03-23]. （原始内容存档于2016-05-03）.
RU. 集結《傳送門》一、二代的《傳送門：同伴合集》今年將在 Switch 平台上市. 巴哈姆特電玩資訊站. 2022-02-10 [2022-02-13]. （原始内容存档于2022-02-16）.
Purslow, Matt. Portal 2 Secrets Guide. PC Gamer. 2011-04-24 [2020-02-24]. （原始内容存档于2020-12-14）（美国英语）.
Portal 2 influenced by Left 4 Dead – Valve. Computer and Video Games. 2011-02-11 [2011-02-11]. （原始内容存档于2011-02-13）.
Brown, David. Portal 2 developer interview: Chet Falisek and Erik Wolpaw. The Daily Telegraph. 2011-03-04 [2011-03-04]. （原始内容存档于2011-03-09）.
Johnson, Stephen. PAX Prime 2010: Portal 2 Co-Op Hands-On Impressions. G4 (电视频道). 2010-09-03 [2010-09-03]. （原始内容存档于2012-01-15）.
Gies, Arthur. Portal 2 Multiplayer Preview. IGN. 2010-09-06 [2010-09-06]. （原始内容存档于2012-01-25）.
de Matos, Xas. Portal 2 E3 Demo Videos Part 4 and Part 5 Incite Anger. Shacknews. 2010-06-30 [2010-07-01]. （原始内容存档于2011-06-14）.
Senior, Tom. 12 new high-res Portal 2 screenshots confirm Companion Cube comeback. PC Gamer. 2011-02-28 [2011-03-01]. （原始内容存档于2011-11-24）.
Frushtick, Russ. Behold Some Amazing 'Portal 2' Cube Tricks. MTV. 2011-04-29 [2011-04-29]. （原始内容存档于2011-05-01）.
大众软件：透析《传送门2》的乐趣宝库_单机游戏_新浪游戏_新浪网. games.sina.com.cn. [2020-02-24]. （原始内容存档于2020-08-07）.
Nunneley, Stephany. Portal 2 E3 demo: final parts 6 and 7 out now. VG247. 2010-07-01 [2010-07-01]. （原始内容存档于2010-07-04）.
Hoggins, Tom. Portal 2 Review. The Daily Telegraph. 2011-04-19 [2011-04-19]. （原始内容存档于2011-04-19）.
Gonzalez, Annette. Portal 2 For Two. Game Informer. 2010-03-05 [2010-03-05]. （原始内容存档于2010-03-07）.
Hillier, Brenna. Portal 2 update adds Big Picture split-screen. VG247. 2012-11-21 [2012-11-21]. （原始内容存档于2012-11-28）.
Hatfield, Damien. E3 2010: Portal 2 Preview. IGN. 2010-06-16 [2010-06-16]. （原始内容存档于2010-06-18）.
Molina, Brett. 'Portal 2': A closer look at co-operative play. USA Today. 2011-04-19 [2011-04-20]. （原始内容存档于2011-04-26）.
Sheffield, Brandon. Rewarding The Players: Valve On Portal 2. Gamasutra. 2010-11-08 [2010-11-10]. （原始内容存档于2010-11-10）.
Benedetti, Winda. Dear Valve, 'Portal 2' better be awesome. But no pressure.. MSNBC. 2010-09-08 [2010-09-08]. （原始内容存档于2010-09-10）.
Totilo, Stephan. Valve Plans To Bridge Portal And Portal 2 With A Surprise, Keep Gordon Freeman Out Of It. Kotaku. 2011-03-11 [2011-03-11]. （原始内容存档于2012-10-18）.
Yin-Poole, Wesley. How Valve Opened Up Portal 2: Interview. Eurogamer. 2011-03-14 [2011-07-25]. （原始内容存档于2011-08-17）.
LAB RAT. www.thinkwithportals.com. [2020-02-24]. （原始内容存档于2020-12-17）.
Onyett, Charles. Jumping into Portal 2. IGN. 2011-01-14 [2011-01-14]. （原始内容存档于2011-01-17）.
Frushtick, Russ. The Very Beginning Of 'Portal 2' Revealed. MTV. 2011-02-17 [2011-02-17]. （原始内容存档于2011-02-21）.
Kuchera, Ben. Portal 2 given story, British friend, deeper gameplay. Ars Technica. 2010-06-16 [2010-06-16]. （原始内容存档于2012-05-09）.
Stewart, Keith. E3 2010: Portal 2 preview. The Guardian. 2010-06-18 [2010-06-21]. （原始内容存档于2010-06-21）.
Sapieha, Chad. Top five GLaDOS insults in Portal 2. The Globe and Mail. 2011-04-20 [2011-04-20]. （原始内容存档于2011-04-23）.
Krantzl, Justin. Portal 2 releases – Unreview, uninterview, unstudiovisit. VG247. 2011-04-19 [2011-04-20]. （原始内容存档于2011-04-20）.
Ohannessian, Kevin. Portal 2's Creators On Crafting Games Through Experiential Stories. Fast Company. 2011-04-27 [2011-04-27]. （原始内容存档于2011-04-30）.
Plunkett, Luke. Proof That Nolan North Is In Too Many Damn Video Games. Kotaku. 2011-05-02 [2011-05-14]. （原始内容存档于2012-02-17）.
Curtis, Tom. GDC 2012: Portal 2: Making a sequel to a 'perfect' game. Gamasutra. 2012-03-08 [2012-03-08]. （原始内容存档于2016-09-24）.
Agnello, Anthony John. Funny People: Erik Wolpaw, Portal 2 head writer. The A.V. Club. 2012-07-10 [2012-07-10]. （原始内容存档于2012-07-13）.
Stanton, Rich. Erik Wolpaw on Portal 2’s ending: "the (spoiler) is probably lurking out there somewhere". PC Gamer. 2011-04-26 [2011-04-26]. （原始内容存档于2011-04-30）.
Walker, John. Valve On Portal 2: Spoiler Interview Part One. Rock Paper Shotgun. 2011-04-27 [2011-04-28]. （原始内容存档于2011-04-29）.
Valve drop Portal 2 co-op details. Computer and Video Games. 2011-03-31 [2011-03-31]. （原始内容存档于2011-04-05）.
Video: Making Portal 2, the sequel to a game that didn't need one. Gamasutra. 2012-07-17 [2012-07-17]. （原始内容存档于2012-07-20）.
Larchuk, Travis. Portal 2: A Student Video Game Project, All Grown Up. NPR. 2011-04-19 [2011-06-18]. （原始内容存档于2011-06-25）.
Crossley, Rob. Valve on Portal 2. Develop. 2011-05-10 [2011-05-11]. （原始内容存档于2011-05-16）.
Remo, Chris. Portal Designer Kim Swift Leaves Valve For Dark Void Dev. Gamasutra. 2009-12-07 [2010-07-09]. （原始内容存档于2010-05-10）.
Leone, Matt. Gabe Newell: Portal 2 is "The Best Game We've Ever Done". 1UP.com. 2010-03-11 [2010-03-12]. （原始内容存档于2012-02-03）.
Keighley, Geoff. The Final Hours of Portal 2 blog is live. [2011-06-18]. （原始内容存档于2011-05-29）.
Nunneley, Stephany. Valve’s not "giving up on single-player at all," plans to add more social features to titles. VG247. 2011-05-07 [2016-10-28]. （原始内容存档于2014-04-20）.
Alexander, Leigh. Valve's Wolpaw Offers Behind-The-Scenes Peek Into Portal 2. Gamasutra. 2011-05-06 [2011-05-06]. （原始内容存档于2011-05-08）.
Yang, Robert. Specially Level With Me, Adam Foster – Part Two. Rock Paper Shotgun. 2012-12-06 [2012-12-06]. （原始内容存档于2012-12-09）.
Walker, John. Valve On Portal 2: Spoiler Interview Part One. Rock Paper Shotgun. 2011-04-27 [2011-04-27]. （原始内容存档于2011-04-29）.
Walker, John. Valve on Portal 2: Spoiler Interview Part Two. Rock Paper Shotgun. 2011-04-28 [2011-04-28]. （原始内容存档于2011-04-30）.
Kao, Ryan. Portal 2: A Look at the Hotly Anticipated Videogame. Wall Street Journal. 2010-09-04 [2010-09-04]. （原始内容存档于2010-09-06）.
Leahy, Brian. Valve Hires DigiPen Team; Seemingly for Portal 2. Shacknews. 2010-03-08 [2010-03-08]. （原始内容存档于2011-05-18）.
Ryckert, Dan. From Narbacular Drop To Portal. Game Informer. 2010-03-08 [2010-03-08]. （原始内容存档于2010-03-10）.
Vlachos, Alex. Water Flow in Portal 2 (PDF). SIGGRAPH 2010. 2010-07-28 [2010-08-10]. （原始内容 (PDF)存档于2010-08-20）.
Welsh, Oli. The Portal 2 that never was. Eurogamer. 2012-03-08 [2013-10-08]. （原始内容存档于2013-09-28）.
Welch, Oli. Portal 2: "Let's make Caddyshack". Eurogamer. 2011-04-25 [2011-04-25]. （原始内容存档于2011-04-28）.
Meer, Alec. 13,000 Lines of Chat in Portal 2. Rock Paper Shotgun. 2011-01-14 [2011-01-14]. （原始内容存档于2011-01-16）.
de Matos, Xav. Interview: Portal 2 project lead Joshua Weier and writer Erik Wolpaw. Shacknews. 2011-03-21 [2011-03-21]. （原始内容存档于2011-03-23）.
Turi, Tim. Chell Almost Married A Turret In Portal 2. Game Informer. 2012-09-01 [2012-09-06]. （原始内容存档于2012-09-05）.
Plunkett, Luke. Casting call reveals Portal 2 details. Kotaku. 2008-06-10 [2008-07-18]. （原始内容存档于2008-06-24）.
Plunkett, Luke. More details on Portal 2's bad guy. Kotaku. 2008-06-10 [2008-07-18]. （原始内容存档于2008-06-24）.
Welsh, Oli. The Portal 2 that never was. Eurogamer. 2012-03-08 [2012-03-08]. （原始内容存档于2013-09-28）.
Remo, Chris. Portal 2's Wolpaw: 'I Do Not Want To Resurrect A Three-Year-Old Meme'. Gamasutra. 2010-06-18 [2010-06-18]. （原始内容存档于2010-06-20）.
Arendt, Susan. Portal 2's Writer Didn't Try to Reinvent the Cake. The Escapist. 2011-03-14 [2011-03-14]. （原始内容存档于2011-03-16）.
Grayson, Nathan. Impressions: Skyrim's Portal 2 Mod. GameSpy. 2012-02-07 [2012-02-07]. （原始内容存档于2012-02-09）.
Phillips, Tom. NASA launches Portal 2 character into orbit. Eurogamer. 2012-07-22 [2012-07-22]. （原始内容存档于2012-07-25）.
Griliopoulos, Dan. Portal 2: Test Subjects. IGN. 2011-03-28 [2011-03-28]. （原始内容存档于2011-08-29）.
Esposito, Joey. Portal 2: Lab Rat – Part 1. IGN. 2011-04-08 [2011-04-11]. （原始内容存档于2011-04-10）.
McCormick, Richard. 10 incredible Portal 2 secrets you might have missed. PlayStation 3 Magazine（英语：PlayStation 3 Magazine）. 2011-07-17 [2011-07-17]. （原始内容存档于2011-07-20）.
Johnson, Stephen. Portal 2 Easter Egg Video: Finding Borealis. G4 (电视频道). 2011-04-20 [2011-04-20]. （原始内容存档于2012-10-17）.
Hillier, Brenna. Wolpaw: Players Don't Care About Portal's Chell. VG24/7. 2011-03-14 [2011-06-20]. （原始内容存档于2011-07-17）.
McWheator, Michael. The New Look For Portal 2's Heroine Explained. Kotaku. 2011-02-23 [2011-02-23]. （原始内容存档于2011-07-08）.
Meet the real-life Chell from Portal 2. Computer and Video Games. 2011-03-29 [2011-04-20]. （原始内容存档于2011-04-05）.
Goldman, Tom. Valve: Portal's Chell is Silent Because It's Funnier. The Escapist. 2011-05-07 [2011-05-22]. （原始内容存档于2011-05-11）.
Sinclair, Brendan. Writing Valve's silent protagonists. Gamespot. 2011-10-12 [2011-10-12]. （原始内容存档于2013-11-04）.
Navarro, Alex. 'So, Here's Something Pretentious!' – Anecdotes and Thoughts from Erik Wolpaw's Portal 2 Discussion at the NYU Game Center. Giant Bomb. 2011-05-06 [2011-05-06]. （原始内容存档于2011-05-09）.
Minkley, Johnny. Being Nathan Drake – Interview. Eurogamer. 2011-05-09 [2011-05-09]. （原始内容存档于2011-05-12）.
Donlan, Christian. Portal 2 Hands-on. Eurogamer. 2011-02-04 [2011-02-04]. （原始内容存档于2011-02-07）.
Ramadge, Andrew. GLaDOS, the greatest video game villain of all time, is back for more cake and chaos in Portal 2. News.com.au（英语：News.com.au）. 2011-02-21 [2011-03-23]. （原始内容存档于2011-04-03）.
Mastrapa, Gus. Portal 2 Gains a Talkative Companion. Wired. 2010-06-16 [2010-06-16]. （原始内容存档于2010-06-18）.
Coulton, Jonathan. FAQs About the Portal 2 Song. jonathancoulton.net. 2011-04-29 [2011-05-20]. （原始内容存档于2011-05-05）.
Vinson, Dana. Portal 2 Ending Song: Want You Gone by Jonathan Coulton Video and Lyrics. G4 (电视频道). 2011-04-20 [2011-04-21]. （原始内容存档于2012-10-17）.
Spicer, Nathan. The National Release "Exile Vilify" off Portal 2 Soundtrack. Paste Magazine（英语：Paste Magazine）. 2011-04-19 [2011-04-19]. （原始内容存档于2011-04-24）.
Dutton, Fred. Valve offers Portal 2 soundtrack for free. Eurogamer. 2011-05-25 [2011-05-25]. （原始内容存档于2011-05-28）.
Dutton, Fred. Portal 2 DLC release date. Eurogamer. 2011-09-30 [2011-09-30]. （原始内容存档于2011-10-02）.
Matulef, Jeffrey. Portal 2: Songs To Test By (Collector's Edition) due next month. Eurogamer. 2012-09-25 [2012-12-23]. （原始内容存档于2013-01-02）.
Portal. Face Time. 2008-02-21 [2011-06-26]. G4TV. （原始内容存档于2012-10-17）.
Valve Releases the Pressure. GT.TV with Geoff Keighley. 2008-03-01 [2011-06-26]. GameTrailers. （原始内容存档于2010-12-31）.
Faylor, Chris. GDC 08: Portal Creators on Writing, Multiplayer, Government Interrogation Techniques. Shacknews. 2008-02-23 [2008-02-23]. （原始内容存档于2011-04-24）.
Wawro, Alex. Anatomy of an Alternate-Reality Game. GamePro. 2010-04-26 [2010-05-13]. （原始内容存档于2010-05-01）.
Fletcher, JC. Portal 2 Easter egg: Valve never meta-ARG it didn't like. Joystiq. 2011-04-20 [2011-04-20]. （原始内容存档于2011-04-23）.
Purchase, Robert. The first anyone had seen publicly of Portal 2 was relayed over this modem from 1987 from my kitchen. Eurogamer. 2013-06-07 [2013-06-07]. （原始内容存档于2013-06-10）.
Foster, Adam. Alternate Reality Game puzzle design. Gamasutra. 2013-06-18 [2013-06-18]. （原始内容存档于2013-07-01）.
Faylor, Chris. Portal Mystery Deepens with Second Update. Shacknews. 2010-03-03 [2010-03-03]. （原始内容存档于2011-03-20）.
Mastrapa, Gus. Geeky Clues Suggest Portal Sequel Is Coming. Wired. 2010-03-02 [2010-03-02]. （原始内容存档于2010-03-03）.
Gaskill, Jake. Rumor: Valve To Make Portal 2 Announcement During GDC 2010. X-Play（英语：X-Play）. 2010-03-03 [2010-03-03]. （原始内容存档于2012-10-17）.
Webster, Andrew. Portal 2 is official, first image inside. 2010-03-05 [2010-03-05]. （原始内容存档于2010-03-07）.
Plunkett, Luke. Portal 2 Hijacks Blue Screen of Death At GDC Awards. Kotaku. 2010-03-11 [2010-03-12]. （原始内容存档于2010-03-14）.
Purchase, Robert. E3 Portal 2 event replaced by "surprise". Eurogamer. 2010-06-02 [2010-06-02]. （原始内容存档于2010-06-05）.
Faylor, Chris. Valve Delays Portal 2, Confirms E3 Surprise Is 'PORTAL-2-THEMED-FOR-GOD'S SAKE'. Shacknews. 2010-06-09 [2010-06-09]. （原始内容存档于2011-04-09）.
Francis, Tom. Valve’s E3 surprise is... oh. Portal 2 on PS3. PC Gamer. 2010-06-15 [2011-06-26]. （原始内容存档于2011-04-26）.
Gay, Gregory. Portal 2 Teleports to Shelves Next February. Escapist（英语：Escapist (magazine)）. 2010-08-18 [2011-04-21]. （原始内容存档于2010-08-21）.
de Matos, Xav. Portal 2 Delayed to 'The Week of April 18'. Shacknews. 2010-11-18 [2010-11-18]. （原始内容存档于2011-03-07）.
Newell: Portal 2 'pretty much' ready for release. Computer and Video Games. 2011-02-19 [2011-02-20]. （原始内容存档于2011-02-22）.
Graff, Kris. EA, Valve Confirm Distribution Agreement For Portal 2. Gamasutra. 2010-12-22 [2010-12-22]. （原始内容存档于2010-12-25）.
Brown, Nathan. Potato Sack Developers Helped Design Portal 2 ARG. Edge. 2011-04-20 [2011-04-20]. （原始内容存档于2011-04-23）.
Phillips, Tom. Portal 2 to get early release on Steam?. The Metro. 2011-04-13 [2011-04-13]. （原始内容存档于2011-04-17）.
Greyson, Nathan. Portal 2 to release early? Potato sack ARG signs point to "yes". VG247. 2011-04-13 [2011-04-13]. （原始内容存档于2011-04-16）.
Senior, Tom. Portal 2 levels appear in potato sack games, clues suggest Portal 2 could be released early. PC Gamer. 2011-04-13 [2011-04-13]. （原始内容存档于2011-04-16）.
Kohler, Chris. Valve May Release Portal 2 On Friday, Not Tuesday. Wired. 2011-04-13 [2011-04-13]. （原始内容存档于2011-04-16）.
Schreier, Jason. Play Steam Games, Launch Portal 2 Early. Wired. 2011-04-15 [2011-04-15]. （原始内容存档于2011-04-18）.
Hillier, Brenna. No more potatoes: Portal 2 available right now on Steam. VG247. 2011-04-18 [2011-04-18]. （原始内容存档于2011-04-20）.
Molina, Brett. Trailer Park: 'Portal 2'. USA Today. 2011-03-22 [2011-03-22]. （原始内容存档于2011-03-26）.
Senior, Tom. Portal 2 has hidden interactive Super 8 teaser level. PC Gamer. 2011-04-19 [2011-04-19]. （原始内容存档于2011-04-22）.
Senior, Tom. Portal 2 has item store, trading coming soon. PC Gamer. 2011-04-19 [2011-04-19]. （原始内容存档于2011-04-29）.
Dutton, Fred. Free Portal 2 DLC out next month. Eurogamer. 2011-08-18 [2011-08-18]. （原始内容存档于2011-08-28）.
Purchase, Robert. Portal 2 Peer Review DLC is 1.37GB. Eurogamer. 2011-10-04 [2011-10-04]. （原始内容存档于2011-10-05）.
Bright, Peter. Portal 2 Peer Review DLC: fun, but missing the magic. Ars Technica. 2011-10-09 [2011-10-11]. （原始内容存档于2011-10-09）.
Orland, Kyle. Valve Offering Free Portal 2 DLC On All Available Platforms This Summer. Gamasutra. 2011-04-29 [2011-04-29]. （原始内容存档于2011-05-01）.
Molina, Brett. Free DLC for 'Portal 2' launching this summer. USA Today. 2011-04-29 [2011-04-29]. （原始内容存档于2011-05-04）.
Portal 2 Mod Levels 'For All Platforms'. NowGamer. 2001-01-24 [2011-06-24]. （原始内容存档于2012-01-20）.
McWhertor, Michael. Now You Can Make Your Own Custom Portal 2 Puzzles (I Said NOW!!). Kotaku. 2011-05-10 [2011-06-24]. （原始内容存档于2011-05-14）.
Senior, Tom. Portal 2 mapping contest kicks off. PC Gamer. 2011-05-26 [2011-10-11]. （原始内容存档于2011-08-07）.
Molina, Brett. 'Portal 2' puzzle creator launches May 8. USA Today. 2012-04-26 [2012-04-26]. （原始内容存档于2012-05-01）.
McElroy, Griffin. 'Portal 2' gets level creation tools May 8th for PC and Mac. Polygon. 2012-04-26 [2012-04-26]. （原始内容存档于2012-04-27）.
Tolito, Stephan. Valve Tinkering With an Excellent Portal 2 Feature That Talks Back. Kotaku. 2011-10-18 [2011-10-19]. （原始内容存档于2011-10-20）.
Senior, Tom. Portal 2 Puzzle Creator in internal beta testing now, will use Steam Workshop. PC Gamer. 2012-03-14 [2012-03-14]. （原始内容存档于2012-03-16）.
Cifaldi, Frank. Portal 2 Sees Map Editor Next Year. Gamasutra. 2011-10-21 [2011-10-21]. （原始内容存档于2011-10-23）.
Helgeson, Matt. Portal 2's Perpetual Testing Initiative Off To A Good Start. Game Informer. 2012-05-10 [2012-05-11]. （原始内容存档于2012-05-12）.
Alexander, Leigh. Valve helps educators Teach With Portals. Gamasutra. 2012-06-20 [2012-06-20]. （原始内容存档于2012-06-22）.
Sharkley, Mike. Valve Announces Documentary Film on Pro Gaming, Portal 2 Co-Op Map Maker. GameSpy. 2012-08-17 [2012-08-17]. （原始内容存档于2013-02-03）.
Portal’s GLaDOS Invades the World of Defense Grid! (新闻稿). Hidden Path Entertainment. [2011-12-02]. （原始内容存档于2012-01-13）.
Narcisse, Evan. Custom 'Portal 2' Video Game Level Built for Marriage Proposal. Time. 2011-08-23 [2011-08-23]. （原始内容存档于2011-09-19）.
Morris, Chris. Behind The Scenes Of The Portal Proposal. Gamasutra. 2011-08-26 [2011-08-26]. （原始内容存档于2011-09-25）.
O'Conner, Alice. Skyrim gets HD texture pack, Portal 2 Space Sphere. Shacknews. 2012-02-07 [2012-02-07]. （原始内容存档于2012-02-08）.
Marks, Tom. Portal Pinball: hands-on with Pinball FX2's new Portal themed table. PC Gamer. 2015-05-05 [2015-05-05]. （原始内容存档于2015-05-08）.
McWhertor, Michael. Portal, Dr. Who, The Simpsons and more confirmed for Lego Dimensions. Polygon. 2015-05-10 [2015-05-10]. （原始内容存档于2015-05-12）.
Matulef, Jeffrey. Portal 2 and Left 4 Dead receive Xbox One backwards compatibility. Eurogamer. 2016-06-16 [2016-06-16]. （原始内容存档于2016-06-17）.
Tach, Dave. Valve details Teach with Portals, Steam for Schools educational initiatives. Polygon. 2012-06-30 [2016-10-25]. （原始内容存档于2016-10-22）.
Schiesel, Seth. Physics, With Wormholes by You. New York Times. 2011-05-10 [2011-05-10]. （原始内容存档于2011-05-13）.
Salen, Katie. How Portal 2 Developers Became The Best 6th Grade Physics Teachers Ever. Fast Company（英语：Fast Company (magazine)）. 2012-11-13 [2012-11-14]. （原始内容存档于2012-11-16）.
Narcisse, Evan. Valve Gives Away Portal 2 for Free to Teachers with ‘Steam for Schools’. Kotaku. 2012-06-20 [2012-06-20]. （原始内容存档于2012-06-23）.
McLeod, Gord. Review: The Razer Hydra Savages Portal 2 (In a Good Way!). GeekBeat.tv. 2011-06-24 [2011-06-24]. （原始内容存档于2011-06-27）.
Horsey, Jillian. Portal 2 First DLC Content, Designed Specifically For Razer Hydra Controller. 2011-06-20 [2011-06-24]. （原始内容存档于2011-06-25）.
Yin-Poole, Wesley. Why Portal 2 doesn't support PS Move. Eurogamer. 2011-02-25 [2011-02-25]. （原始内容存档于2011-02-28）.
Peckham, Matt. Valve Apologizes For Sony-Bashing, Announces Portal 2 for PS3. PC World. 2010-06-15 [2010-06-15]. （原始内容存档于2010-06-19）.
Thorsen, Tor. Portal 2, Steamworks PS3-bound in 2011. Gamespot. 2010-06-15 [2010-06-16]. （原始内容存档于2012-03-13）.
Yin-Poole, Wesley. Portal 2 PS3, Steam cross-platform play. Eurogamer. 2011-01-18 [2010-01-18]. （原始内容存档于2016-03-03）.
Valve details PS3 Steam support for Portal 2. Computer and Video Games. 2011-04-13 [2011-04-13]. （原始内容存档于2011-04-16）.
Ingham, Tim. Valve 'no plans' for 3D, Move support in Portal 2. Computer and Video Games. 2010-06-22 [2010-06-22]. （原始内容存档于2012-01-05）.
Watts, Steve. Portal 2 on PS3 Will Not Feature Move Support (Updated). Shacknews. 2011-02-17 [2011-02-17]. （原始内容存档于2011-04-04）.
Plunkett, Luke. Portal Picks Up a PlayStation Move Controller, Returns to the PS3 With New Levels. Kotaku. 2012-06-05 [2012-06-05]. （原始内容存档于2012-06-08）.
Jackson, Mike. Portal 2 'In Motion' DLC out in US today, launch trailer. Computer & Video Games. 2012-11-06 [2012-11-06]. （原始内容存档于2012-11-09）.
Matulef, Jeffrey. Portal 2's Move-based In Motion DLC gets a free co-op campaign. Eurogamer. 2013-06-06 [2013-06-06]. （原始内容存档于2013-06-09）.
Anderson, Joe. Spike VGA 2010 winners – Red Dead Redemption scoops GOTY. VG247. 2010-12-10 [2011-05-27]. （原始内容存档于2011-04-16）.
Portal 2 for X360. GameRankings. [2011-05-08]. （原始内容存档于2017-01-06）.
Portal 2 for PS3. GameRankings. [2011-05-08]. （原始内容存档于2016-12-10）.
Portal 2 for Xbox 360 Reviews, Ratings, Credits, and More at Metacritic. Metacritic. [2011-04-23]. （原始内容存档于2016-12-12）.
Portal 2 for PlayStation 3 Reviews, Ratings, Credits, and More at Metacritic. Metacritic. [2011-05-02]. （原始内容存档于2017-01-13）.
Portal 2 Review. Edge. 2011-04-19 [2011-04-30]. （原始内容存档于2011-08-29）.
Gifford, Kevin. Japan Review Check: Portal 2, Ghost Recon. 1UP.com. 2011-05-11 [2011-05-11]. （原始内容存档于2014-01-06）.
Watters, Chris. Portal 2 Review. GameSpot. 2011-04-19 [2015-09-07]. （原始内容存档于2011-10-29）.
Stapleton, Dan. Portal 2 review. PC Gamer. 2011-04-19 [2011-04-26]. （原始内容存档于2015-12-31）.
Cowen, Danny. Critical Reception: Valve's Portal 2. Gamasutra. 2011-04-20 [2011-04-20]. （原始内容存档于2011-04-23）.
Ivan, Tom. Narrowly beats The Elder Scrolls V: Skyrim on Xbox 360 to take the top review spot. Computer and Video Games. 2012-01-13 [2012-01-13]. （原始内容存档于2012-01-15）.
Molina, Brett. Review: 'Portal 2' aces the sequel test. USA Today. 2011-04-19 [2011-04-19]. （原始内容存档于2011-04-20）.
Sapieha, Chad. Portal 2 is for smarty-pants only. Globe and Mail. 2011-05-01 [2011-05-01]. （原始内容存档于2011-05-03）.
Cowen, Nick. Portal 2 – Review. The Guardian. 2011-04-19 [2011-04-19]. （原始内容存档于2011-04-23）.
Freeman, Will. Portal 2 – review. The Observer. 2011-04-23 [2011-04-23]. （原始内容存档于2011-04-26）.
Kuo, Ryan. Portal 2 Is A Hole In One. Wall Street Journal. 2011-04-19 [2011-04-19]. （原始内容存档于2011-04-25）.
Mastrapa, Gus. Portal 2. A.V. Club. 2011-04-25 [2011-04-25]. （原始内容存档于2011-04-29）.
Martin, Garrett. ‘Portal 2’ sure to gel with fans. Boston Herald（英语：Boston Herald）. 2011-04-25 [2011-05-01]. （原始内容存档于2012-10-05）.
Frum, Larry. 'Portal 2' is a dark, humorous joy (and that's no lie). CNN. 2011-04-19 [2011-04-19]. （原始内容存档于2012-01-14）.
Narcisse, Evan. Portal 2 Review: Our First Perfect 10. Time. 2011-04-19 [2011-04-19]. （原始内容存档于2013-11-10）.
Young, John. 'Portal 2' videogame review: Physics is phunny. Entertainment Weekly. 2011-04-20 [2011-04-20]. （原始内容存档于2011-04-20）.
Bright, Peter. Thinking on rails: why Portal 2 isn't as good as the original. Ars Technica. 2011-05-02 [2011-05-02]. （原始内容存档于2011-05-04）.
Hamilton, Kirk. Portal 2 Review (Multi-Platform). Paste（英语：Paste (magazine)）. 2011-04-26 [2011-05-05]. （原始内容存档于2011-04-29）.
Kohler, Jeff. Portal 2 Review. Wired. 2011-04-21 [2011-04-21]. （原始内容存档于2011-04-24）.
The Escapist : Building Sequels Badly. Escapistmagazine.com. [2013-04-22]. （原始内容存档于2013-05-16）.
Jenkins, David. Fans protest Portal 2 on Metacritic. GamesIndustry.biz. 2011-04-20 [2011-04-20]. （原始内容存档于2011-04-23）.
metrowebukmetro. Portal 2 hit by user review backlash on Metacritic. Metro. 2011-04-20 [2011-04-20]. （原始内容存档于2011-04-24）.
Tolito. The People are Panning Portal2. Kotaku. 2011-04-19 [2011-04-19]. （原始内容存档于2011-09-27）.
Walker, John. Let's Address Some Portal 2 Nonsense. Rock Paper Shotgun. 2011-04-19 [2011-04-19]. （原始内容存档于2011-04-21）.
Dutton, Fred. Portal 2 Metacritic user score pounded. Eurogamer. 2011-04-19 [2011-04-19]. （原始内容存档于2011-04-25）.
Handrahan, Matthew. Portal 2 voted GOTY at Golden Joysticks. GamesIndustry.biz. 2011-10-21 [2011-10-21]. （原始内容存档于2011-10-24）.
Portal 2 – The Top 10 Everything of 2011 – TIME. Time. 2011-12-07 [2011-12-09]. （原始内容存档于2011-12-09）.
IGNs 2011 Game of the Year Video. IGN. 2012-01-17 [2012-01-17]. （原始内容存档于2012-01-20）.
Eurogamer's Game of the Year 2011. Eurogamer. 2011-12-31 [2011-12-31]. （原始内容存档于2012-01-07）.
Fahey, Mike. Portal 2 Takes Kotaku’s 2011 Game of the Year Award for Science, You Monster. Kotaku. 2012-01-02 [2012-01-02]. （原始内容存档于2012-01-07）.
'Portal 2,' 'Skyrim' top a thrilling year in games. Associated Press. 2011-12-21 [2011-12-21]. （原始内容存档于2012-02-02）.
Orland, Kyle. Portal 2 Leads Spike TV VGA Nominees With 12 Nods. Gamasutra. 2011-11-16 [2011-11-16]. （原始内容存档于2011-11-19）.
Cork, Jeff. Skyrim, Portal 2, Arkham City Won Big At VGAs. Game Informer. 2011-12-11 [2011-12-11]. （原始内容存档于2012-01-06）.
Portal 2, Skyrim, Bastion lead finalists for 12th annual Game Developers Choice Awards. Gamasutra. 2012-01-05 [2012-01-05]. （原始内容存档于2012-01-08）.
Skyrim wins Game of the Year at GDC Awards. Gamasutra. 2012-03-08 [2012-03-08]. （原始内容存档于2012-03-09）.
Bertz, Matt. Skyrim Dominates The 15th Annual Interactive Achievement Awards. Game Informer. 2012-02-09 [2012-02-09]. （原始内容存档于2012-02-11）.
Molina, Brett. 'Batman,' 'L.A. Noire' lead BAFTA game award nods. USA Today. 2012-02-16 [2012-02-21]. （原始内容存档于2012-02-19）.
Portal 2 wins best game at the Bafta Video Game Awards. BBC. 2012-03-16 [2012-03-16]. （原始内容存档于2012-03-16）.
Curtis, Tom. Battlefield 3, Portal 2, more win big at 10th annual G.A.N.G. Awards. Gamasutra. 2012-03-14 [2012-03-14]. （原始内容存档于2012-03-17）.
Schiesel, Seth. Skyrim Wins Video Game Critics Award. New York Times. 2012-02-03 [2012-02-07]. （原始内容存档于2012-02-07）.
Valve reveals Steam Awards nominees. PC Gamer. [2018-06-10]. （原始内容存档于2018-06-12）.
The Steam Awards. Steam. [2018-06-10]. （原始内容存档于2018-06-12）.
Cowen, Danny. Saling The World: Portal 2 Leads Cross-Platform Charts Worldwide. Gamasutra. 2011-04-22 [2011-06-27]. （原始内容存档于2011-05-08）.
Cowen, Danny. Saling The World: Mortal Kombat Overtakes Portal 2 Stateside. Gamasutra. 2011-04-29 [2011-04-29]. （原始内容存档于2011-04-30）.
Dutton, Fred. NPD: Mortal Kombat beats Portal 2 in US. Eurogamer. 2011-05-12 [2011-06-27]. （原始内容存档于2011-05-17）.
Graft, Kris. NPD: May U.S. Retail Game Industry Sales Lowest Since Oct. '06. 2001-06-13 [2011-06-27]. （原始内容存档于2011-06-17）.
Klepek, Patrick. Portal 2 Has Sold More Than 3 Million Copies. Giant Bomb. 2011-06-22 [2014-12-16]. （原始内容存档于2012-10-18）.
Rose, Mike. Portal 2 Scores Valve First Ever Top Spot In UK Sales Charts. Gamasutra. 2011-04-26 [2011-04-26]. （原始内容存档于2011-04-29）.
Rose, Mike. Portal 2 Holds On To Top Spot For Second Week In UK Sales Charts. Gamasutra. 2011-05-03 [2011-05-03]. （原始内容存档于2011-05-06）.
Matthews, Matt. Analysis: Did The PSN Outage Hurt U.S. PS3 Hardware Sales?. Gamasutra. 2011-06-21 [2011-06-27]. （原始内容存档于2014-10-11）.
Graft, Kris. Developers Say PSN Outage Affecting Sales, But Remain Hopeful. Gamasutra. 2001-04-26 [2011-06-27]. （原始内容存档于2011-08-11）.
Anderson, Joe. Has PSN outage affected Portal 2 PS3 sales?. ShopToNews. 2011-04-26 [2011-06-27]. （原始内容存档于2012-05-12）.
Orland, Kyle. Newell: Portal 2 Has Sold 3 Million Copies. Gamasutra. 2011-06-22 [2011-06-22]. （原始内容存档于2011-06-25）.
Dutton, Fred. Crysis 2 racks up three million sales. Eurogamer. 2011-07-26 [2011-07-26]. （原始内容存档于2011-08-07）.
Nutt, Christian. The Valve Way: Gabe Newell And Erik Johnson Speak. Gamasutra. 2011-08-29 [2011-08-30]. （原始内容存档于2011-09-30）.
Caoili, Eric. Portal 2 has sold over 4M copies. Gamasutra. 2012-05-08 [2012-05-08]. （原始内容存档于2012-05-08）.
Hillard, Kyle. Fan Made Portal 2 Mod Looks Good Enough To Be From Valve. Game Informer. 2015-01-31 [2015-05-10]. （原始内容存档于2015-07-02）.
Savage, Phil. Portal 2 mod Aperture Tag releases on Steam, for a price. PC Gamer. 2014-07-16 [2019-05-27]. （原始内容存档于2019-05-27）.
Portal 2 mod Thinking With Time Machine now available on Steam. PC Gamer. 2014-04-22 [2019-05-27]. （原始内容存档于2019-05-27）.
Moore, Bo. This Portal 2 Mod Lets You Play Against Yourself. Wired. 2014-04-28 [2019-05-27]. （原始内容存档于2015-05-18）.

webcitation.org

Francis, Tom. Interview: Valve on their insane Portal 2 ideas. PC World. 2010-09-10 [2010-09-10]. （原始内容存档于2012-03-10）.
Remo, Chris. Synthesizing Portal 2. Gamasutra. 2010-09-20 [2010-09-20]. （原始内容存档于2012-03-10）.
Tolito, Stephen. Portal 2 Wasn’t Going to Include Portals, According To New iPad App. Kotaku. 2011-04-21 [2011-05-06]. （原始内容存档于2012-02-01）.
Reeves, Ben. Thinking With Portals: Making a Portal 2 Test Chamber. Game Informer. 2010-03-17 [2010-03-17]. （原始内容存档于2012-03-10）.
Grant, Christopher. Preview: Portal 2 (co-op). Joystiq. 2010-06-21 [2010-06-21]. （原始内容存档于2012-03-10）.
Watts, Steve. Valve Cut Portal 2 Competitive Multiplayer. 1UP.com. 2010-08-26 [2010-08-26]. （原始内容存档于2012-03-10）.
Reeves, Ben. Redesigning Portal: Valve's Artist Speaks. Game Informer. 2010-03-22 [2010-03-22]. （原始内容存档于2012-03-10）.
Kollar, Phil. Portal 2 Has A Release Date And A New Voice Actor. Game Informer. 2010-08-18 [2010-08-18]. （原始内容存档于2012-03-10）.
Miller, Greg. PAX: Portal 2 Nabs J. K. Simmons. IGN. 2011-03-11 [2011-03-11]. （原始内容存档于2012-03-10）.
Maiberg, Emanuel. Portal 2 preview. Gamepro. 2011-01-21 [2011-01-21]. （原始内容存档于2011-11-30）.
Walker, John. The National To Provide Song For Portal 2. Rock, Paper, Shotgun. 2011-03-11 [2011-03-11]. （原始内容存档于2012-03-10）.
Purchese, Rob. More Portal for sure – Valve. Eurogamer. 2008-01-31 [2008-01-30]. （原始内容存档于2012-03-10）.
O'Connor, Alice; Leahy, Brian. Portal Patch Adds Morse Code, Achievement – Portal 2 Speculation Begins (Updated). Shacknews. 2010-03-01 [2010-03-02]. （原始内容存档于2012-08-06）.
Faylor, Chris. Steam Coming to Mac in April, Portal 2 This Fall. Shacknews. 2010-03-08 [2010-03-08]. （原始内容存档于2012-03-10）.
Davidson, Pete. Play indie games, help Portal 2 release early. GamePro. 2011-04-15 [2011-04-15]. （原始内容存档于2011-11-30）.
Hillier, Brenna. Valve's in-house Portal 2 ad the result of "copycat" agency treatments (Update). VG247. 2011-03-17 [2011-03-17]. （原始内容存档于2012-03-10）.
Davidson, Pete. Portal 2 goodies now on sale. GamePro. 2011-04-19 [2011-04-19]. （原始内容存档于2011-11-30）.
Bastion on PC? Now you're thinking with portals. Ars Technica. 2011-08-22 [2011-08-23]. （原始内容存档于2012-08-27）.
Buchanan, Levi. CES: Razer Gets Portal 2 Exclusives. IGN. 2011-01-08 [2011-01-08]. （原始内容存档于2012-03-10）.
Nunneley, Stephany. Core Portal 2 game is the same "whether you buy it on PS3 or 360", says Valve. VG247. 2011-01-22 [2011-01-24]. （原始内容存档于2012-03-10）.
2010 Winners. Game Critics Awards（英语：Game Critics Awards）. 2010-07-06 [2010-07-06]. （原始内容存档于2017-07-02）.
Snider, Mike. E3 2010: Game Critics Awards nominees announced. USA Today. 2010-06-29 [2010-06-30]. （原始内容存档于2012-03-10）.
E3 2010: Best of E3 Awards. IGN. 2010-06-17 [2010-06-30]. （原始内容存档于2012-03-10）.
GameSpy's Best of E3 2010 Awards. Gamespy. 2010-06-25 [2010-06-30]. （原始内容存档于2012-03-10）.
Portal 2 for PC. GameRankings. [2011-04-19]. （原始内容存档于2012-03-10）.
Portal 2 for PC Reviews, Ratings, Credits, and More. Metacritic. [2011-04-23]. （原始内容存档于2012-03-10）.
Nelson, Mike. Portal 2 Review. 1UP.com. [2011-04-21]. （原始内容存档于2012-03-10）.
Welsh, Oli. Portal 2. Eurogamer. 2011-04-19 [2011-04-19]. （原始内容存档于2012-03-10）.
Webb, Morgan. Portal 2 Review – Xbox 360. G4 (电视频道). 2011-04-19 [2011-04-19]. （原始内容存档于2012-03-10）.
Biessener, Adam. Portal 2. Game Informer. 2011-04-18 [2011-04-19]. （原始内容存档于2012-03-10）.
Onyett, Charles. Portal 2 Review. IGN. 2011-04-19 [2011-04-19]. （原始内容存档于2012-03-10）.
Gamasutra's Best Of 2011: Top 10 Games Of The Year. Gamasutra. 2011-12-23 [2011-12-23]. （原始内容存档于2012-11-03）.
Lynch, Kevin. Portal 2, The Witcher 2 and Uncharted 3: Drake's Deception... the top 10 video games of 2011. Daily Mirror. 2011-12-23 [2011-12-23]. （原始内容存档于2012-11-03）.
15th Annual Interactive Achievement Awards Finalists (PDF). Academy of Interactive Arts & Sciences. 2012-01-13 [2012-01-13]. （原始内容存档 (PDF)于2012-01-13）.
Nunneley, Stephany. 2012 Golden Joystick Awards – Skyrim wins Ultimate Game of the Year. VG247. 2012-10-26 [2012-10-26]. （原始内容存档于2012-11-23）.

wikipedia.org

en.wikipedia.org

McCormick, Richard. 10 incredible Portal 2 secrets you might have missed. PlayStation 3 Magazine（英语：PlayStation 3 Magazine）. 2011-07-17 [2011-07-17]. （原始内容存档于2011-07-20）.
Ramadge, Andrew. GLaDOS, the greatest video game villain of all time, is back for more cake and chaos in Portal 2. News.com.au（英语：News.com.au）. 2011-02-21 [2011-03-23]. （原始内容存档于2011-04-03）.
Portal 2: Collector's Edition Guide. Gardners Books（英语：Gardners Books）. 2011. ISBN 978-3-86993-038-1.
Spicer, Nathan. The National Release "Exile Vilify" off Portal 2 Soundtrack. Paste Magazine（英语：Paste Magazine）. 2011-04-19 [2011-04-19]. （原始内容存档于2011-04-24）.
Gaskill, Jake. Rumor: Valve To Make Portal 2 Announcement During GDC 2010. X-Play（英语：X-Play）. 2010-03-03 [2010-03-03]. （原始内容存档于2012-10-17）.
Gay, Gregory. Portal 2 Teleports to Shelves Next February. Escapist（英语：Escapist (magazine)）. 2010-08-18 [2011-04-21]. （原始内容存档于2010-08-21）.
Salen, Katie. How Portal 2 Developers Became The Best 6th Grade Physics Teachers Ever. Fast Company（英语：Fast Company (magazine)）. 2012-11-13 [2012-11-14]. （原始内容存档于2012-11-16）.
2010 Winners. Game Critics Awards（英语：Game Critics Awards）. 2010-07-06 [2010-07-06]. （原始内容存档于2017-07-02）.
Martin, Garrett. ‘Portal 2’ sure to gel with fans. Boston Herald（英语：Boston Herald）. 2011-04-25 [2011-05-01]. （原始内容存档于2012-10-05）.
Hamilton, Kirk. Portal 2 Review (Multi-Platform). Paste（英语：Paste (magazine)）. 2011-04-26 [2011-05-05]. （原始内容存档于2011-04-29）.

wired.com

Mastrapa, Gus. Portal 2 Gains a Talkative Companion. Wired. 2010-06-16 [2010-06-16]. （原始内容存档于2010-06-18）.
Mastrapa, Gus. Geeky Clues Suggest Portal Sequel Is Coming. Wired. 2010-03-02 [2010-03-02]. （原始内容存档于2010-03-03）.
Kohler, Chris. Valve May Release Portal 2 On Friday, Not Tuesday. Wired. 2011-04-13 [2011-04-13]. （原始内容存档于2011-04-16）.
Schreier, Jason. Play Steam Games, Launch Portal 2 Early. Wired. 2011-04-15 [2011-04-15]. （原始内容存档于2011-04-18）.
Kohler, Jeff. Portal 2 Review. Wired. 2011-04-21 [2011-04-21]. （原始内容存档于2011-04-24）.
Moore, Bo. This Portal 2 Mod Lets You Play Against Yourself. Wired. 2014-04-28 [2019-05-27]. （原始内容存档于2015-05-18）.

wsj.com

blogs.wsj.com

Kao, Ryan. Portal 2: A Look at the Hotly Anticipated Videogame. Wall Street Journal. 2010-09-04 [2010-09-04]. （原始内容存档于2010-09-06）.
Kuo, Ryan. Portal 2 Is A Hole In One. Wall Street Journal. 2011-04-19 [2011-04-19]. （原始内容存档于2011-04-25）.