From Sonic Retro
January 6 (
- 1996 — Issue #69 of Sonic the Comic is released in the United Kingdom.
- 1999 — Sonic Underground begins airing on the TF1 network in France. Issue #22 of the Knuckles the Echidna comic series is released in North America.
- 2004 — Sonic Heroes is released for the Nintendo GameCube in North America. Sonic Heroes: Prima's Official Strategy Guide is published in North America.
- 2011 — Sonic Tennis DX is released for Club Air-Edge compatible phones through Sega's Puyo Puyo! Sega portal in Japan.
- 2016 — Worlds Collide: The Complete Epic, a trade paperback, is released in North America.