Anniversaries/December 25
From Sega Retro
December 25: Christmas Day (add)
- 1992 - Taz-Mania and Wonder MIDI are released for the Sega Mega Drive alongside Shining Force Gaiden: Ensei Jashin no Kuni e for the Sega Game Gear, Capcom no Quiz Tonosama no Yabou and Tenbu Mega CD Special for the Sega Mega-CD, and Gain Ground for the Super CD-ROM², all in Japan.
- 1993 - The true embodiment of Christmas spirit arrives in the form of Awesome Possum Kicks Dr. Machino's Butt! for the Sega Mega Drive in Japan. Ho ho... ho?
- 1994 - Rockman Mega World Hisshou Kouryaku Hou, a book, is released in Japan.
- 1995 - Shin Megami Tensei: Devil Summoner is released for the Sega Saturn in Japan.
- 1999 - Maken X Koushiki Guide Book, a book, is released in Japan.
- 2002 - Shinobi: The Complete Guide, a book, is released in Japan.
- 2003 - Derby Tsuku 3: Derby Ba wo Tsukurou! Complete Guide and Phantasy Star Online Episode III: C.A.R.D. Revolution Complete Guide, both books, are released alongside Musica e WCCF: World Club Champion Football Serie A 2001-2003, a CD, Chocolat: Maid Cafe "Curio", Moekan, and Sentimental Graffiti: Yakusoku for the Sega Dreamcast, and Sega GT Online for the Xbox, all in Japan.
- 2006 - ToeJam & Earl is released for the Wii Virtual Console in North America.
- 2007 - Virtua Fighter, a gambling machine, is released alongside Langrisser II for the Wii Virtual Console and Chokkan o e Kaki for i-mode 90x compatible phones through Sega's Puyo Puyo! Sega portal in Japan.
- 2008 - Phantasy Star 0 Photon Master Guide and Phantasy Star Portable Comic Anthology, both books, are released alongside Phantasy Star 0 for the Nintendo DS in Japan.
- 2009 - Empire: Total War is released for Windows PCs in Japan.
- 2013 - Phantasy Star Music Collection 2000-2007, a CD, is released alongside Puyo Puyo Tsuufor the Nintendo 3DS Virtual Console in Japan.
- 2014 - Sakura Taisen New York Hoshigumi Show 2014: O Tanoshimi wa Korekarada, a DVD for the stage play of the same name, is released alongside Devil Summoner: Soul Hackers being made available for digital download on the Nintendo eShop in Japan.
- 2015 - Sonic Runners Original Soundtrack Vol. 2 is made available for download from Amazon and iTunes in Japan.
- 2020 - Border Break Music Collection Type-05, a CD, is released in Japan.
- 2021 - Dracula no Shiro, an aftermarket Sega Mega Drive game, is released in Japan.