Anniversaries/April 27
From Sega Retro
April 27 (add)
- 1990 - Psy-O-Blade is released for the Sega Mega Drive in Japan.
- 1991 - Shikinjoh is released for the Sega Mega Drive in Japan.
- 1992 - Shining Force Kouryaku no Tebiki, a book, is released in Japan.
- 1994 - Double Dribble: The Playoff Edition is released for the Sega Mega Drive in North America.
- 1997 - Puyo Puyo Sun Koushiki Guide Book, a book, is released in Japan.
- 1999 - Blue Stinger Perfect Guide, a book, is released alongside Paso Pico Godzilla Doki Doki Kaijuu-tou!! for Windows PC and Mac OS in Japan. Sakura Wars, a VHS, is released in North America.
- 2000 - Dance Dance Revolution Club Version Dreamcast Edition, Kiteretsu Boy's Gangagan, Power Stone 2, Samba de Amigo, Sorcerian: Shichisei Mahou no Shito, and the Samba de Amigo Maracas Controller peripheral are released for the Sega Dreamcast in Japan.
- 2001 - Skies of Arcadia and Worms World Party are released for the Sega Dreamcast in Europe.
- 2002 - Sakura Taisen 4 Dramatic Navi, a book, is released in Japan.
- 2006 - Dynamite Deka vs Wing War Original Soundtrack and Sega Simulation Best: Advanced Daisenryaku Original Soundtrack, both CDs, are released alongside Sega Ages 2500 Series Vol. 26: Dynamite Deka and Sega Ages 2500 Series Vol. 27: Panzer Dragoon for the PlayStation 2, Ocha-ken no Heya DS for the Nintendo DS, and Machi: Unmei no Kousaten Tokubetsu Hen for the PlayStation Portable in Japan.
- 2007 - Issho ni Wan Wan is released in Japanese Arcades for the Sega System P board.
- 2011 - Sakura Taisen Paris Hanagumi & New York Hoshigumi Live 2010: Karenna Hanabana Kirameku Shinshin, an album for the stage play of the same name, is released alongside Senjou no Valkyria 3 Original Soundtrack for the Mora streaming platform, as well as the Senjou no Valkyria Blu-ray Box, a Blu-ray, all in Japan.
- 2012 - Binary Domain is released for Steam in North America, Europe, and Australia.
- 2017 - Puyo Puyo Tetris is released for the Nintendo Switch in Europe and Australia. Warhammer 40,000: Dawn of War III is released for Steam in North America and Europe, and physically for Windows PCs in South Korea, Poland, and Russia.
- 2020 - Amazing MEIJIN Channel is released for Android devices worldwide and for iOS in Japan.