Anniversaries/October 1
From Sega Retro
October 1 (add)
- 1988 - Double Dragon and R-Type are released for the Sega Master System in Japan.
- 1992 - Prince of Persia and Tom and Jerry: The Movie are released for the Sega Master System alongside Back to the Future Part III and Mega Games I for the Sega Mega Drive, as well as Popils: The Blockbusting Challenge for the Sega Game Gear in Europe.
- 1993 - Shining Force II: Inishie no Fuuin is released for the Sega Mega Drive alongside GG Aleste II for the Sega Game Gear in Japan.
- 1994 - Shining Force CD Koushiki Guide Book, a book, is released in Japan. Sonic the Hedgehog Adventure Gamebook 1 and Sonic the Hedgehog Adventure Gamebook 2, both books, are released in the United Kingdom.
- 1995 - Riglordsaga Original Soundtrack, a CD, is released in Japan. The Official Rocket Science Guide to Loadstar: The Legend of Tully Bodine, a book, is released in North America.
- 1996 - Ecco: Songs of Time, a CD, is released in North America.
- 1997 - Teikoku Kagekidan Hanagumi Aki Kouen: Ai ha Daiya, a CD, is released in Japan. Madden NFL 98 is released for the Sega Mega Drive alongside Mega Man X4, Resident Evil, and The Lost World: Jurassic Park for the Sega Saturn in North America.
- 1998 - BackGuiner: Yomigaeru Yuusha-tachi: Hishou-hen Uragiri no Senjou, Densha de Go! EX, Hatsukoi Monogatari, Sakura Tsuushin, and The King of Fighters Best Collection are released alongside the Densha de Go! Controller peripheral for the Sega Saturn in Japan.
- 2001 - Sonic Adventure 2 Perfect Guide and Super Robot Taisen Alpha For Dreamcast Perfect Guide, both books, are released alongside Hello Kitty to McDonald de Asobo! for the Sega Pico in Japan.
- 2002 - Doki Doki Penguin Land is released for J-Sky (50KB) compatible phones through Sega's Sega Ages portal alongside Kenpa Dai Undoukai Version for J-Sky (50KB) compatible phones through Sega's Pocket Works portal in Japan. Virtua Tennis is released for the Game Boy Advance in North America.
- 2004 - OutRun 2 is released for the Xbox in Europe.
- 2005 - Sakura Taisen V: Saraba, Itoshiki Hitoyo Genga & Settei Shiryoushuu, a book, is released in Japan.
- 2007 - Sonic no Jigen Ressha is released for Vodafone Live! (256KB) compatible phones through Sega's Sonic Cafe portal in Japan.
- 2008 - Koizora: Kimi ga Hohoemu Machi is released for Vodafone Live! (3G) compatible phones through Sega's Puyo Puyo! Sega portal in Japan. Golden Axe: Beast Rider Official Strategy Guide, a book, is released in North America.
- 2009 - Madou Monogatari III is released for Vodafone Live! (3G) compatible phones through Sega's Puyo Puyo! Sega portal in Japan. Alien Syndrome, Crazy Taxi: Fare Wars, Crush, Sega Genesis Collection, Sonic Rivals, Sonic Rivals 2, and Super Monkey Ball Adventure are made available for digital download on the PlayStation Store in North America. Crush is made available for digital download on the PlayStation Store in Europe. Crush is made available for digital download on the PlayStation Store alongside Sonic PC Collection for Windows PCs in Australia.
- 2010 - Sonic Tennis DX is released for Vodafone Live! (3G) compatible phones through Sega's Puyo Puyo! Sega portal in Japan.
- 2018 - Dreamcast Complete Guide Book, a book, is released in Japan.