Gradius (video game) (English Wikipedia)

"Gradius - Review". AllGame. Archived from the original on 2014-11-15. Retrieved 8 April 2021.
Weiss, Brett Alan. "Gradius (NES) - Review". AllGame. Archived from the original on 2014-12-10. Retrieved 2017-07-06.

archive.org

Akagi, Masumi (13 October 2006). アーケードTVゲームリスト国内•海外編(1971-2005) [Arcade TV Game List: Domestic • Overseas Edition (1971-2005)] (in Japanese). Japan: Amusement News Agency. p. 122. ISBN 978-4990251215.
"Year in Review". Cashbox. January 17, 1987.
Headley, Eric (26 February 1987). "Nemesis". Commodore User. No. 42 (March 1987). pp. 18–9.
"Coin-Op Connection". Computer Gamer. No. 11. February 1986. pp. 54–5.
"1986 Top Ten Coin-Ops". Sinclair User. No. 59. February 1987. p. 96.
"CVG Charts". Computer and Video Games. No. 123 (February 1992). 15 January 1992. pp. 81–3.

books.google.com

Kent, Steven L. (16 June 2010). The Ultimate History of Video Games, Volume 1: From Pong to Pokémon and Beyond... the Story Behind the Craze That Touched Our Lives and Changed the World. Crown Publishing Group. p. 510. ISBN 978-0-307-56087-2.

gamasutra.com

Kalata, Kurt (April 30, 2015). "The history of Gradius: A look back at 30 years of Konami shooting". Gamasutra. UBM Technology Group. Archived from the original on November 8, 2020. Retrieved November 23, 2020.

gamespot.com

gamefaqs.gamespot.com

"Gradius Release Information for NES". GameFAQs.

gamespot.com

Ryan Davis. "Gradius Review". GameSpot. CBS Interactive. Retrieved 2018-01-14.

hamster.co.jp

"ArcadeArchives | HAMSTER Corporation". www.hamster.co.jp. Retrieved 2020-03-28.
"Arcade Archives | HAMSTER Corporation". www.hamster.co.jp. Retrieved 2020-03-28.

hardcoregaming101.net

"Gradius – Hardcore Gaming 101". Retrieved 2021-12-08.

ign.com

"Konami Anniversary Collections Include Castlevania, Contra, and Arcade Classics". 20 March 2019.
Lucas M. Thomas (2007-01-09). "Gradius VC Review". IGN. News Corporation. Retrieved 2018-01-14.

loc.gov

cocatalog.loc.gov

"Nemesis (Registration Number PA0000257005)". United States Copyright Office. Retrieved 11 May 2021.

mobygames.com

"Gradius Cover Art". MobyGames. Retrieved 2014-08-02.

onitama.tv

"Game Machine's Best Hit Games 25: '86 上半期" [Game Machine's Best Hit Games 25: First Half '86] (PDF). Game Machine (in Japanese). No. 288. Amusement Press, Inc. 15 July 1986. p. 28. Archived (PDF) from the original on 2020-01-31.
"Game Machine's Best Hit Games 25: '86 下半期" [Game Machine's Best Hit Games 25: Second Half '86] (PDF). Game Machine (in Japanese). No. 300. Amusement Press, Inc. 15 January 1987. p. 16. Archived (PDF) from the original on 2019-11-02.

retrocdn.net

"Console Wars" (PDF). ACE. No. 26 (November 1989). October 1989. p. 144.
"Complete Games Guide" (PDF). Computer and Video Games (Complete Guide to Consoles): 46–77. 16 October 1989. Archived (PDF) from the original on 2021-01-05.

shmuplations.com

"Machiguchi Hiroyasu Gradius Interviews (Translated)". Shmuplations. Archived from the original on 29 July 2019. Retrieved 8 December 2019.

solvalou.com

"Arcade Action: Nemesis". Computer + Video Games. No. 48 (October 1985). 16 September 1985. p. 96.

st-hatena.com

cdn-ak.f.st-hatena.com

"1986 ベストヒットゲーム大賞" [1986 Best Hit Game Awards]. Famicom Tsūshin (in Japanese). Vol. 1987, no. 3. 6 February 1987. pp. 4 to 7.

the-magicbox.com

"Japan Platinum Game Chart". The Magic Box. Archived from the original on October 17, 2012. Retrieved April 22, 2017.

videogameschronicle.com

Scullion, Chris (25 April 2021). "The Konami Code celebrates its 35th anniversary today". Video Games Chronicle. Retrieved 25 April 2021.

web.archive.org

Kalata, Kurt (April 30, 2015). "The history of Gradius: A look back at 30 years of Konami shooting". Gamasutra. UBM Technology Group. Archived from the original on November 8, 2020. Retrieved November 23, 2020.
"Machiguchi Hiroyasu Gradius Interviews (Translated)". Shmuplations. Archived from the original on 29 July 2019. Retrieved 8 December 2019.
"Gradius - Review". AllGame. Archived from the original on 2014-11-15. Retrieved 8 April 2021.
Weiss, Brett Alan. "Gradius (NES) - Review". AllGame. Archived from the original on 2014-12-10. Retrieved 2017-07-06.
"Complete Games Guide" (PDF). Computer and Video Games (Complete Guide to Consoles): 46–77. 16 October 1989. Archived (PDF) from the original on 2021-01-05.
"Sinclair ZX Spectrum Reviews". zxspectrumreviews.co.uk. Archived from the original on 2016-03-04. Retrieved 2015-09-04.
"World of Spectrum". Worldofspectrum.rog. Archived from the original (JPG) on 2016-03-05. Retrieved 2018-01-14.
"Nemesis". ysrnry.co.uk. Archived from the original on 2016-03-05. Retrieved 2015-09-04.
"Game Machine's Best Hit Games 25: '86 上半期" [Game Machine's Best Hit Games 25: First Half '86] (PDF). Game Machine (in Japanese). No. 288. Amusement Press, Inc. 15 July 1986. p. 28. Archived (PDF) from the original on 2020-01-31.
"Game Machine's Best Hit Games 25: '86 下半期" [Game Machine's Best Hit Games 25: Second Half '86] (PDF). Game Machine (in Japanese). No. 300. Amusement Press, Inc. 15 January 1987. p. 16. Archived (PDF) from the original on 2019-11-02.
"Japan Platinum Game Chart". The Magic Box. Archived from the original on October 17, 2012. Retrieved April 22, 2017.

wikipedia.org

ja.wikipedia.org

"Game Machine's Best Hit Games 25: '86 上半期" [Game Machine's Best Hit Games 25: First Half '86] (PDF). Game Machine (in Japanese). No. 288. Amusement Press, Inc. 15 July 1986. p. 28. Archived (PDF) from the original on 2020-01-31.

worldofspectrum.org

"Nemesis". Computer and Video Games. No. 65 (March 1987). February 1987. Retrieved 2016-08-17.
"World of Spectrum". Worldofspectrum.rog. Archived from the original (JPG) on 2016-03-05. Retrieved 2018-01-14.

ysrnry.co.uk

"Nemesis". ysrnry.co.uk. Archived from the original on 2016-03-05. Retrieved 2015-09-04.

zxspectrumreviews.co.uk

"Sinclair ZX Spectrum Reviews". zxspectrumreviews.co.uk. Archived from the original on 2016-03-04. Retrieved 2015-09-04.