Anniversaries/April 15
From Sega Retro
April 15 (add)
- 1991 - The Sega Game Gear is released in North America, beginning with New York and Los Angeles.
- 1994 - Battle Fantasy and Urusei Yatsura: Dear My Friends are released for the Sega Mega-CD alongside Virtual Cameraman 2 for the Sega Mega LD in Japan.
- 1995 - J.B. Harold Blue Chicago Blues is released for the Sega Mega LD in Japan.
- 1996 - Vampire Hunter Perfect Guide, a book, is released in Japan.
- 1998 - Panzer Dragoon Saga Demo Disc is released in the United Kingdom.
- 1999 - Morita no Saikyou Reversi and Morita no Saikyou Shogi are released for the Sega Dreamcast in Japan.
- 2000 - Wetrix+ is released for the Sega Dreamcast in France.
- 2003 - PS2 Ban Virtua Fighter 4 Evolution Complete Guide, a book, is released in Japan. Phantasy Star Online Episode I & II is released for the Xbox in North America.
- 2004 - Kaze no Uta is released for the Sega Dreamcast in Japan.
- 2005 - World Snooker Championship 2005 is released for the PlayStation 2, Xbox, PlayStation Portable, and Windows PCs in Europe.
- 2009 - OutRun Online Arcade is released for the Xbox 360's Xbox Live Arcade service worldwide.
- 2015 - Ryu ga Gotoku 0: Chikai no Basho Kanzen Kouryaku Kyoku no Sho, a book, is released in Japan.
- 2019 - Canon: The Legends of the New God, Switchblade, and Thunderbolt II, all aftermarket Sega Mega Drive games, are released in North America.
- 2020 - Phantasy Star Online 2 is released for the Xbox One and Steam in North America. SDI & Quartet: Sega System 16 Collection: Original Soundtrack is made available for the Mora streaming platform in Japan and to download through Amazon in North America.