Anniversaries/December 9
From Sega Retro
December 9 (add)
- 1988 - Space Harrier is released for the PC Engine in Japan.
- 1989 - Tatsujin is released for the Sega Mega Drive in Japan.
- 1992 - Streets of Rage is released for the Sega Game Gear in North America.
- 1994 - The Lion King and The Story of Thor: Hikari o Tsugumono are released for the Sega Mega Drive alongside Samurai Spirits for the Sega Game Gear and Clockwork Knight: Pepperouchau no Daibouken Joukan for the Sega Saturn in Japan.
- 1995 - The second Joypolis indoor theme park, Niigata Joypolis, is opened to the public.
- 1997 - Bust-A-Move 3 is released for the Sega Saturn in North America.
- 1999 - Bakuretsu Muteki Bangaioh, Jet Coaster Dream, Dennou Senki Virtual-On Oratorio Tangram M.S.B.S. Ver. 5.4, DreamFlyer, O.to.i.Re: Dreamcast Sequencer, Star Gladiator 2: Nightmare of Bilsten, and Golf Shiyouyo are released with the Dreamcast Taisen Cable and Dreamcast Twin Stick accessories for the Sega Dreamcast in Japan. Dream On Volume 4 is released for the Sega Dreamcast in Germany and the United Kingdom.
- 2000 - Super Runabout: San Francisco Edition is released for the Sega Dreamcast in France.
- 2003 - Disney Princesses: Princess ni Naritai is released for the Sega Pico in Japan.
- 2004 - Sonic Mega Collection Plus is released for the PlayStation 2 and Xbox alongside Sonic Heroes for Windows PCs in Japan.
- 2006 - Super Monkey Ball: Banana Blitz is released for the Wii in Spain.
- 2008 - Sonic Unleashed is released for the PlayStation 3 in Canada.
- 2009 - Let's Tap: Rhythm Tap Free is released for iOS in Japan, North America, and Europe.
- 2010 - End of Eternity is released for the PlayStation 3 alongside Bakugan Battle Brawlers DS: Defenders of the Core for the Nintendo DS and Senjou no Valkyria 2: Gallia Ouritsu Shikan Gakkou for the PlayStation Portable in Japan.
- 2011 - Shining Force Cross Raid Guide Book 2nd, a book, is released alongside Kingdom Conquest for Android devices in Japan. Sega Mega Drive Classic Collection Volume 4 is released for Windows PCs in Russia.
- 2013 - Saka Tsuku: Pro Soccer Club o Tsukurou! Perfect Guide, a book, is released in Japan.
- 2014 - Empire: Total War is released for Linux devices through Steam in North America, Europe, and Australia.
- 2015 - maimai PiNK is released in Japanese Arcades for the Sega RingEdge 2 board.