Anniversaries/March 21
From Sega Retro
March 21 (add)
- 1989 - Phantasy Star II: Kaerazaru Toki no Owari ni is released for the Sega Mega Drive in Japan.
- 1990 - Penguin Land is released for the Game Boy in Japan.
- 1991 - Columns・Columns II, a CD, is released alongside Mickey Mouse no Castle Illusion for the Sega Game Gear in Japan.
- 1994 - Eternal Champions: Sega Genesis Official Power Guide, a book, is released in North America.
- 1997 - Hanasaku Otome, a CD, is released in Japan. Crypt Killer and Hexen are released for the Sega Saturn in Europe.
- 2000 - Rayman 2: The Great Escape is released for the Sega Dreamcast in North America.
- 2001 - Sakura Taisen 3 Hanagumi Roman Gahou, a book, is released alongside ChuChu Rocket! for the Game Boy Advance as a launch title in Japan.
- 2002 - Sakura Taisen 4: Koi Seyo, Otome and Sakura Taisen Complete Box are released for the Sega Dreamcast alongside Gunvalkyrie for the Xbox and Keitai Kinematron for i-mode 503i compatible phones though Sega's Sakura Taisen Keitai Club portal in Japan. NBA 2K2 and Phantasy Star Online Ver. 2 are released for the Sega Dreamcast in Spain.
- 2003 - Panzer Dragoon Orta and Shenmue II are released for the Xbox alongside Sonic Advance 2 for the Game Boy Advance in Europe.
- 2005 - Bingo Parade is released in Japanese Arcades for the Sega System SP board. Volume 1 of Sonic X, a DVD, is released in Australia.
- 2006 - House of the Dead II, a DVD, is released alongside The Tower SP for the Game Boy Advance in North America.
- 2007 - Puyo Puyo! Original Sound Track, a CD, is released alongside the game it is for, Puyo Puyo!, for the PlayStation 2 and PlayStation Portable in Japan.
- 2008 - Mystery Dungeon: Shiren the Wanderer is released for the Nintendo DS in France while Sega Superstars Tennis is released for the Xbox 360 in Europe. Brain Assist is released for the Nintendo DS in Spain, Italy, and Australia.
- 2013 - Dennou Senki Virtual-On: Marz is released for the PlayStation 3 in Japan.
- 2016 - Total War Battles: Kingdom is released for iOS in North America and Europe.
- 2018 - Senjou no Valkyria 4 is released for the PlayStation 4 in Japan, South Korea, and Taiwan. Mega Marble World, an aftermarket Sega Mega Drive game is released in North America.