From Sega Retro
March 9 (
- 1990 - Air Diver is released for the Mega Drive in Japan. Sega Challenge 1990 finals occur in the United Kingdom.
- 1995 - Virtua Fighter 2 Act.1, a book, is released in Japan.
- 2000 - Gunbird 2 is released for the Dreamcast in Japan, Crazy Taxi is released for the Sega Dreamcast in Australia, and Dream On Volume 7 is released for the Sega Dreamcast in Europe.
- 2001 - Isao Okawa, Chairman for Sega between 1984 and 2001, dies. Sonic Shuffle is released for the Dreamcast in Europe, Ducati World Racing Challenge is released for the Sega Dreamcast in the United Kingdom and Italy, and Vanishing Point is released for the Sega Dreamcast in the United Kingdom, Italy, and the Netherlands.
- 2004 - Prima's Official Strategy Guide: Phantasy Star Online Episode III: C.A.R.D. Revolution, a book, is released in North America.
- 2006 - 3D Mahjong Geki Pai is released for EZweb (BREW 2.1) compatible phones though Sega's Pet * Sega portal while Sakura Taisen 1 & 2 is released for the PlayStation Portable in Japan.
- 2007 - La Tela di Carlotta is released for the Nintendo DS in Italy. Sonic Mega Collection Plus is released for Windows PCs in North America.
- 2008 - Super Smash Bros. Brawl is released for the Wii in North America, featuring Sonic the Hedgehog as a guest fighter.
- 2009 - The Master System version of Alex Kidd: The Lost Stars is released on the Wii Virtual Console alongside MadWorld Official Strategy Guide, a book, in North America.
- 2010 - Condemned: Criminal Origins is made available for digital download on the Xbox 360 in North America, Europe, and Australia. Ryu ga Gotoku 3 is released for the PlayStation 3 in Asian regions.
- 2011 - Sega Play! Baseball, a Flash game, is made available to play through the Facebook website.
- 2012 - Shining Force Cross Settei Shiryoushuu, a book, is released, Super Monkey Ball Uki Uki Seesaw is released for Android devices through Sega's Puyo Puyo! Sega portal, and Miku Flick is released for iOS, all in Japan.
- 2016 - Shining Soul II is released for the Wii U Virtual Console in Japan.
- 2018 - Resurrection: Panzer Dragoon Saga 20th Anniversary Arrangement, a CD, is released in Europe.