From Sonic Retro
December 5 (
- 1994 — Tails and the Music Maker is released for the Sega Pico in Europe.
- 2007 — Issue #27 of the Sonic X comic series is released in North America.
- 2012 — Sonic the Fighters is released for the PlayStation 3 in Europe and Australia. Sonic & All-Stars Racing Transformed is released for the PlayStation Vita in North America. Issue #243 of the Sonic the Hedgehog comic series by Archie Comics is released in North America.
- 2013 — Mario & Sonic at the Sochi 2014 Olympic Winter Games is released for the Wii U in Japan. 3D Sonic the Hedgehog is released for the Nintendo 3DS in North America and Europe.
- 2018 — Team Sonic Racing, a one-shot comic special, is released in North America.