Anniversaries/October 21
From Sega Retro
October 21 (add)
- 1989 - Super Sonic Team, a Compact Cassette and CD, is released alongside Rambo III for the Sega Mega Drive in Japan.
- 1990 - Tel-Tel Stadium is released for the Sega Mega Drive in Japan.
- 1992 - Alien 3 is released for the Sega Master System alongside Heavyweight Champ for the Sega Game Gear in Europe.
- 1993 - Thunderhawk, a Demo Disc, is released for the Sega Mega-CD in the United Kingdom.
- 1994 - Yuu Yuu Hakusho: Makyou Toitsusen - Mega Drive Game Music, a CD, is released alongside Rockman Mega World for the Sega Mega Drive in Japan. Bubsy II is released for the Sega Mega Drive in Europe.
- 1997 - NFL 98 is released for the Sega Mega Drive in North America.
- 1998 - Spikeout Original Soundtrack, a CD, is released alongside Deep Fear Sound Drama Vol. 1 and Deep Fear Sound Drama Vol. 2, both Drama CDs, in Japan.
- 1999 - Yume Baken '99 Internet is released for the Sega Dreamcast in Japan. Toy Commander is released for the Sega Dreamcast in France.
- 2000 - Eternal Arcadia Best Navigation Guide, a book, is released alongside Crackin' DJ Original Soundtrack, a CD, in Japan. Space Channel 5 is released for the Sega Dreamcast in Australia.
- 2002 - J.League Pro Soccer Club o Tsukurou! Advance Perfect Guide, a book, is released in Japan.
- 2003 - ESPN NBA Basketball is released for the PlayStation 2 in North America.
- 2004 - Sega Kara for PC and Warrior Kings: Battles Nihon Gohan are released for Windows PCs in Japan.
- 2005 - Football Manager 2006 is released for Windows PCs and Mac OS X in Europe. Guilty Gear XX Reload is released for the PlayStation Portable in South Korea.
- 2008 - Enduro Racer is released for the Wii Virtual Console in Japan.
- 2009 - 7th Dragon Settei Gashuu, a book, is released alongside The Works, a CD, and StarHorse Progress Returns in Arcades for the Sega NAOMI board in Japan.
- 2010 - Meet Bub: Bub to Eigo Tanken is released for the Advanced Pico Beena in Japan. Vanquish is released for the Xbox 360 in Japan, Australia, and Asia regions and for the PlayStation 3 in Japan, Australia, and Taiwan.
- 2011 - Captain America: Super Soldier is released for the Nintendo 3DS alongside Football Manager 2012 for Windows PCs and Mac OS X in Europe.
- 2014 - Bayonetta: Bloody Fate, a DVD and Blu-Ray, is released in North America.
- 2015 - ChuChu Rocket! is released for the Wii U Virtual Console in Japan.
- 2016 - Superdimension Neptune VS Sega Hard Girls is released for the PlayStation Vita in Europe and Australia.
- 2020 - Sonic the Hedgehog, a Blu-Ray, is released in Japan.
- 2021 - Ongeki bright is released in Arcades for the ALLS HX board alongside the Mega Drive Tower Mini Zero cosmetic add-on for the Mega Drive Mini in Japan.
- 2022 - Persona 5 Royal is released for the Xbox One, Nintendo Switch, PlayStation 5, and on Steam in Japan, North America, Europe, Australia, South Korea, and Taiwan.