Anniversaries/December 15
From Sega Retro
December 15 (add)
- 1985 - Great Baseball is released for the Sega Master System in Japan.
- 1986 - High School! Kimengumi is released for the Sega Master System in Japan.
- 1989 - Mega Drive no Subete, a book, is released alongside Mega Selection, a Compact Cassette and CD, as well as Herzog Zwei for the Sega Mega Drive in Japan.
- 1990 - Magical Hat no Buttobi Turbo! Daibouken is released for the Sega Mega Drive alongside G-LOC: Air Battle and Soukoban for the Sega Game Gear in Japan.
- 1991 - Mega Selection II, a CD, is released in Japan.
- 1992 - Dokusen! Taikan Game Hisshou Guidebook and Landstalker: Koutei no Zaihou Game Guide Book, both books, are released in Japan. Streets of Rage 2 is released for the Sega Mega Drive in North America.
- 1993 - Virtua Racing & OutRunners, a CD, is released in Japan.
- 1994 - Gamemaster: Conquering Sega Genesis Games, a book, is released in North America.
- 1995 - Super Momotarou Dentetsu III is released for the Sega Game Gear alongside Chibi Maruko-Chan no Taisen Pazuru Dama, Clockwork Knight: Pepperouchau no Fukubukuro, Darius Gaiden, DX Jinsei Game, EMIT Value Set, Gunbird, Wangan Dead Heat, Kaitei Daisensou, Kekkon: Marriage, Magical Drop, and The Hyper Golf: Devil's Course for the Sega Saturn in Japan. Gex is released for the Sega Saturn in North America.
- 1997 - Ginga Ojousama Densetsu Yuna Mika Akitaka Illust Works 2 is released for the Sega Saturn in Japan.Sega 350 Igr, a book, is released in Russia.
- 1999 - Test Drive 6 is released for the Sega Dreamcast in North America. Soul Fighter is released for the Sega Dreamcast in Spain. PenPen, Sega Worldwide Soccer 2000, and Tokyo Highway Challenge are released for the Sega Dreamcast in Australia.
- 2000 - Disney's Donald Duck Goin' Quackers and Speed Devils Online Racing are released for the Sega Dreamcast in North America. Disney's Donald Duck Quack Attack is released for the Sega Dreamcast in the United Kingdom while Capcom vs. SNK: Millennium Fight 2000, Disney's 102 Dalmatians: Puppies to the Rescue, POD 2, Record of Lodoss War, Star Wars Demolition, Street Fighter III: 3rd Strike, The Grinch, Tomb Raider: Chronicles, Tony Hawk's Pro Skater 2, and Tokyo Highway Challenge 2 are released for the Sega Dreamcast in Europe. Disney's Dinosaur and Sega GT are released for the Sega Dreamcast in Australia.
- 2003 - Sonic the Hedgehog: The Movie, a DVD, is released in the United Kingdom.
- 2004 - SegaRocks Live in Japan, a CD, is released alongside 1000 Mile Monogatari for Vodafone Live! (256KB) compatible phones through Sega's Pet * Sega portal and Hanagumi Columns for i-mode 504i and J-Sky (50KB) compatible phones through Sega's Sakura Taisen Keitai Club portal in Japan.
- 2005 - Jissen Pachi-Slot Hisshouhou! Aladdin 2 Evolution is released for the PlayStation 2 alongside Shadow the Hedgehog for the PlayStation 2, Nintendo Gamecube, and Xbox in Japan. Cool Herders, an aftermarket Sega Dreamcast game, is released in North America.
- 2006 - Wild Jungle Brothers, a Mid-size attraction and Fortune Forest, a Large attraction, both debut at Tokyo Joypolis in Japan. Columns, Gunstar Heroes, and Ristar are released for the Wii Virtual Console in Europe.
- 2008 - Sega Soccer Slam is released for the Xbox 360 though the Xbox Originals program alongside Enduro Racer for the Wii Virtual Console in North America.
- 2009 - Zaxxon is released for the Wii Virtual Console in Japan.
- 2010 - Touch de Uno! DX: Hansha Shinkei Hen is released for Vodafone Live! (3G) compatible phones through Sega's Puyo Puyo! Sega portal in Japan.
- 2011 - Puyo Puyo!! Anniversary Sound Collection, a CD, is released alongside the game it for, Puyo Puyo!!, for the Wii, PlayStation Portable, and Nintendo 3DS, as well as Hatsune Miku: Project DIVA Extend being made available for digital download on the PlayStation Store in Japan. Sonic the Hedgehog CD is released for iOS in North America and Europe.
- 2012 - Border Break Artworks 2006-2012, a book, is released in Japan.
- 2014 - Shining Resonance is released for the PlayStation 3 in South Korea.
- 2015 - Wild River The Treasure Hunt, a Mid-size attraction, debuts at Tokyo Joypolis in Japan.
- 2016 - maimai Murasaki is released in Japanese Arcades.
- 2017 - The Super Retro Trio Plus, a clone console manufactured by Retro-bit, is released in the United Kingdom while Streets of Rage Perfect Soundtrack, a CD, is released alongside Sega Catcher Online for Android devices in Europe. Sega Catcher Online is released for Android devices in Japan, North America, and Australia.
- 2018 - S.S.T. Band: 30th Anniversary Box, a CD, is released in Japan.
- 2020 - Sakura Kakumei: Hana Saku Otome-tachi is released for Android devices and iOS in Japan.
- 2022 - Alien Storm, Columns, Golden Axe II, and Virtua Fighter 2 Genesis are released for the Nintendo Switch Online service for the Nintendo Switch in North America. Sonic Frontiers: The Music of Starfall Islands, a vinyl album, is released in the United Kingdom. Sonic Prime begins streaming through the Netflix streaming service worldwide.