Doom engine (English Wikipedia)

Schuytema, Paul C. (August 1994). "The Lighter Side Of Doom". Computer Gaming World. pp. 140, 142. Archived from the original on 2018-01-02. Retrieved 2019-02-14.

computinghistory.org.uk (Global: low place; English: low place)

"NeXT Computers - Company - Computing History". www.computinghistory.org.uk. Archived from the original on 2022-03-29. Retrieved 2022-03-29.

destructoid.com (Global: 875^th place; English: 574^th place)

Glagowski, Peter (2018-08-17). "Doom 2 mod Annie rises after 12 year development period". destructoid. Retrieved 2018-08-17.

doomwiki.org (Global: low place; English: low place)

Slime trail - The Doom Wiki

doomworld.com (Global: low place; English: low place)

"Doom source code, under the GNU GPL - Doomworld /idgames database frontend". Archived from the original on 2021-03-28. Retrieved 2021-03-28.

dsogaming.com (Global: low place; English: low place)

Papadopoulos, John (2020-03-16). "Someone has created an Alien Breed 3D Remake in GZDoom, and you can download it right now". DSOGaming. Retrieved 2024-06-22.

fabiensanglard.net (Global: low place; English: low place)

Sanglard, Fabien. "Doom engine code review". Archived from the original on 3 September 2012. Retrieved 23 August 2012.

faqs.org (Global: 4,871^st place; English: 4,382^nd place)

Apted, Andrew. "SPECIFICATION for GL-Nodes". Archived from the original on 2 September 2012. Retrieved 22 August 2012.

gamepressure.com (Global: low place; English: 9,354^th place)

Werner, Adrian (2022-04-22). "CountryCide - New Version of Stunning Dark Mod for Doom 2". gamepressure. Retrieved 2022-04-22.

gamers.org (Global: low place; English: low place)

"Doom source code, under the GNU GPL". gamers.org. Archived from the original on 31 May 2023.

gamingonlinux.com (Global: low place; English: low place)

Dawe, Liam (2018-04-19). "The Adventures of Square is mildly amusing retro FPS that's free with a second episode out now". GamingOnLinux. Retrieved 2023-02-19.
Dawe, Liam (2018-11-05). "Total Chaos is an impressive and scary total conversion for Doom 2 making it a survival horror experience". gamingonlinux. Retrieved 2018-11-05.
Dawe, Liam (2022-05-22). "GZDoom powered dark-fantasy FPS 'Hands of Necromancy' is out now". GamingOnLinux. Retrieved 2024-07-15.

giantbomb.com (Global: 2,694^th place; English: 1,969^th place)

"id Tech 1 (Concept)". Giant Bomb. Archived from the original on 2019-02-15. Retrieved 2019-02-14.

github.com (Global: 383^rd place; English: 320^th place)

"Doom3do/LICENSE at master · Olde-Skuul/Doom3do". GitHub. 17 December 2022. Archived from the original on 19 February 2022. Retrieved 14 February 2019.

hellforgestudios.com (Global: low place; English: low place)

"Project Absentia". 30 October 2022.

indie-hive.com (Global: low place; English: low place)

Tamaster, Tamaster (2023-03-21). "Apocalyptic Vibes – An Immersive Journey Through a Faded-out, Post-Nuclear Earth!". indie-hive. Retrieved 2023-03-21.

kotaku.com (Global: 401^st place; English: 271^st place)

Zwiezen, Zack (2023-09-29). "New Doom Mod Is Basically A Badass Indiana Jones Game". kotaku. Retrieved 2023-09-29.
Zwiezen, Zack (2024-05-31). "New FPS Built Using Doom Tech Is Better Than Most AAA Shooters". Kotaku. Archived from the original on 2024-07-15. Retrieved 2024-07-14.
Kotaky, Kotaku (2024-11-25). "Borrowhelen Screenshots and Videos - Kotaku". Kotaku. Retrieved 2024-11-25.

pcgamer.com (Global: 428^th place; English: 286^th place)

Staff (December 29, 1997). "Doom II Source Available". PC Gamer US. Archived from the original on February 18, 1998. Retrieved November 20, 2019.
Bolding, Jonathan (2019-12-27). "Butcher some cosmic horrors in Doom 2 mod Shrine". pcgamesn. Retrieved 2019-12-27.
Chalk, Andy (2023-08-05). "Supplice is a new retro-FPS made by Doom modders, and it really feels like old-school Doom". PCGamer. Retrieved 2023-06-05.
Smith, Mova (2023-12-14). "Retro FPS Beyond Sunset is a precision-crafted cyberpunk potpourri of all the great megawads that came before it". pcgamer. Retrieved 2023-12-14.
Wolens, Joshua (2025-10-06). "This 2025 shooter made in a decades-old Doom engine is gorgeous, fun, and tough as nails". pcgamer. Retrieved 2025-10-06.

pcgamesn.com (Global: 1,748^th place; English: 1,058^th place)

McHugh, Alex (2024-09-17). "New retro FPS Hands of Necromancy 2 looks to Heretic for inspiration". pcgamesn. Retrieved 2024-09-17.

rockpapershotgun.com (Global: 1,438^th place; English: 877^th place)

Tarason, Dominic (2019-04-01). "Modder Superior: The many free descendants of Doom". Rock Paper Shotgun. Archived from the original on 2023-08-06. Retrieved 2024-07-14.
Gillen, Kieron (2009-11-18). "Harmony in My Head: Harmony". Rock Paper Shotgun. Archived from the original on 2023-02-23. Retrieved 2023-02-22.
Smith, Adam (2016-08-03). "Blade Of Agony Is An Incredible 'WolfenDoom' Mod". rockpapershotgun. Retrieved 2016-08-03.
Tarason, Dominic (2018-01-07). "Shadow & Rise Of The Wool Ball turn Wolfenstein cute". Rock Paper Shotgun. Archived from the original on 2024-07-15. Retrieved 2024-07-14.
Tarason, Dominic (2018-09-24). "Brave a very 80s apocalyptic wasteland in Doom conversion Ashes 2063". rockpapershotgun. Archived from the original on 2021-06-17. Retrieved 2018-09-24.
Tarason, Dominic (2019-01-14). "Hocus Pocus Doom drags Apogee's DOS platformer into the third dimension". rockpapershotgun. Retrieved 2019-01-14.
Tarason, Dominic (2021-06-27). "Castlevania: Simon's Destiny is a treat of a Doom mod". rockpapershotgun. Retrieved 2021-06-27.

techraptor.net (Global: low place; English: 6,889^th place)

Glagowski, Peter (2021-08-11). "Vomitoreum Review". Tech Raptor. Archived from the original on 2024-07-15. Retrieved 2024-07-14.

tigsource.com (Global: low place; English: low place)

Yu, Derek (2008-01-09). "Action Doom 2: Urban Brawl". tigsource. Retrieved 2008-01-09.

vgr.com (Global: low place; English: low place)

Tsiro, Rania (2018-07-12). "Doomguy Is Now Some Kind Of Viking In The Rekkr Game". VGR. Archived from the original on 2024-07-15. Retrieved 2024-07-14.
Digre, Alyxx (2019-05-16). "Hedon – PC Game Review". VGR. Archived from the original on 2024-07-15. Retrieved 2024-07-14.

web.archive.org (Global: 1^st place; English: 1^st place)

"Doom source code, under the GNU GPL". gamers.org. Archived from the original on 31 May 2023.
"Doom3do/LICENSE at master · Olde-Skuul/Doom3do". GitHub. 17 December 2022. Archived from the original on 19 February 2022. Retrieved 14 February 2019.
"NeXT Computers - Company - Computing History". www.computinghistory.org.uk. Archived from the original on 2022-03-29. Retrieved 2022-03-29.
Staff (December 29, 1997). "Doom II Source Available". PC Gamer US. Archived from the original on February 18, 1998. Retrieved November 20, 2019.
https://web.archive.org/web/*/ftp://ftp.idsoftware.com/idstuff/source/* "FTP link". ftp.idsoftware.com. Archived from the original on 2015-12-02.
"Doom source code, under the GNU GPL - Doomworld /idgames database frontend". Archived from the original on 2021-03-28. Retrieved 2021-03-28.
The Doom source code from 3ddownloads.com Archived February 24, 2004, at the Wayback Machine - released in 1997, now under the GNU GPL v2-or-later
"id Tech 1 (Concept)". Giant Bomb. Archived from the original on 2019-02-15. Retrieved 2019-02-14.
Schuytema, Paul C. (August 1994). "The Lighter Side Of Doom". Computer Gaming World. pp. 140, 142. Archived from the original on 2018-01-02. Retrieved 2019-02-14.
Apted, Andrew. "SPECIFICATION for GL-Nodes". Archived from the original on 2 September 2012. Retrieved 22 August 2012.
Sanglard, Fabien. "Doom engine code review". Archived from the original on 3 September 2012. Retrieved 23 August 2012.
Tarason, Dominic (2019-04-01). "Modder Superior: The many free descendants of Doom". Rock Paper Shotgun. Archived from the original on 2023-08-06. Retrieved 2024-07-14.
Gillen, Kieron (2009-11-18). "Harmony in My Head: Harmony". Rock Paper Shotgun. Archived from the original on 2023-02-23. Retrieved 2023-02-22.
Tarason, Dominic (2018-01-07). "Shadow & Rise Of The Wool Ball turn Wolfenstein cute". Rock Paper Shotgun. Archived from the original on 2024-07-15. Retrieved 2024-07-14.
Tsiro, Rania (2018-07-12). "Doomguy Is Now Some Kind Of Viking In The Rekkr Game". VGR. Archived from the original on 2024-07-15. Retrieved 2024-07-14.
Tarason, Dominic (2018-09-24). "Brave a very 80s apocalyptic wasteland in Doom conversion Ashes 2063". rockpapershotgun. Archived from the original on 2021-06-17. Retrieved 2018-09-24.
Digre, Alyxx (2019-05-16). "Hedon – PC Game Review". VGR. Archived from the original on 2024-07-15. Retrieved 2024-07-14.
Glagowski, Peter (2021-08-11). "Vomitoreum Review". Tech Raptor. Archived from the original on 2024-07-15. Retrieved 2024-07-14.
Zwiezen, Zack (2024-05-31). "New FPS Built Using Doom Tech Is Better Than Most AAA Shooters". Kotaku. Archived from the original on 2024-07-15. Retrieved 2024-07-14.

Doom engine (English Wikipedia)

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doomworld.com (Global: low place; English: low place)

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hellforgestudios.com (Global: low place; English: low place)

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giantbomb.com (Global: 2,694^th place; English: 1,969^th place)

github.com (Global: 383^rd place; English: 320^th place)

kotaku.com (Global: 401^st place; English: 271^st place)

pcgamer.com (Global: 428^th place; English: 286^th place)

pcgamesn.com (Global: 1,748^th place; English: 1,058^th place)

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techraptor.net (Global: low place; English: 6,889^th place)

web.archive.org (Global: 1^st place; English: 1^st place)