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.
- 1998 - Kidou Senshi Gundam: Giren no Yabou Perfect Guide, 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 - Canvas: Sepia Iro no Motif Koushiki Guide and Illbleed Zekkyou Survival Manual, both books, are released in Japan. Skies of Arcadia and Worms World Party are released for the Sega Dreamcast in Europe.
- 2002 - Saka Tsuku 2002: J.League Pro Soccer Club o Tsukurou! The Complete and Sakura Taisen 4 Dramatic Navi, both books, are 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 on 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 and iOS in Japan as well as for Android devices in North America, Europe, and Australia.
- 2023 - Sega Archives - M2 Music Memorial -, a CD, is released in Japan.