Anniversaries/December 16
From Sonic Retro
December 16 (add)
- 1998 — Sonic Adventure Remix, an album featuring remixes of the vocal themes from Sonic Adventure, is released on CD in Japan. Issue #145 of Sonic the Comic is released in the United Kingdom.
- 2008 — Sonic Unleashed is released for the PlayStation 3 in Australia.
- 2009 — True Colors: The Best of Sonic the Hedgehog Part 2, a CD, is released alongside Sonic Bowling for mobile phones in Japan.
- 2011 — Sonic the Hedgehog CD is released for Android devices in Japan.
- 2014 — Book 4 of the Sonic Legacy Series is released digitally in North America.