Anniversaries/April 20
From Sega Retro
April 20 (add)
- 1987 - SDI: Strategic Defense Initiative is released in Japanese Arcades for the Sega System 16 board.
- 1992 - Shining Force: Kamigami no Isan Hyakka, a book, is released in Japan.
- 1995 - Virtua Fighter 2, a VHS, is released in Japan.
- 1996 - Fukuoka Joypolis is opened to the public and with it, Aqua Nova makes its debut appearance.
- 1997 - Tenchi Muyou! Rensa Hitsuyou Koushiki Guide Book, a book, is released in Japan.
- 2000 - Sakura Momoko Gekijou: Coji Coji is released for the Sega Dreamcast in Japan.
- 2001 - Azel: Panzer Dragoon RPG Memorial Album, a CD, is released alongside Advanced Daisenryaku 98 II Kanzenban for Windows PCs in Japan. Project Justice: Rival Schools 2 is released for the Sega Dreamcast in Spain while NBA Hoopz is released for the Sega Dreamcast in Europe.
- 2004 - Shining Soul II is released for the Game Boy Advance in North America.
- 2006 - Trizeal is released for the PlayStation 2 alongside Zoo Tycoon DS: Doubutsuen wo Tsukurou! for the Nintendo DS in Japan.
- 2007 - Sonic Jump is released for mobile devices in Europe.
- 2009 - Wonder Boy III: Monster Lair is released for the Wii Virtual Console in North America.
- 2011 - Sonic the Hedgehog 2 is released for the PlayStation 3 in Europe and Australia.
- 2012 - Shogun: Total War Battles is released for iOS in Japan.
- 2016 - Phantasy Star Online 2 is released for the PlayStation 4 in Japan.
- 2017 - Sanpoke: Sangokushi Taisen Pocket is released for Android devices and iOS in Japan.