Anniversaries/December 12
From Sonic Retro
December 12 (add)
- 2001 — Issue #222 of Sonic the Comic is released in the United Kingdom.
- 2008 — Sonic Unleashed is released for the PlayStation 3 in North America.
- 2010 — Sonic Free Riders Original Soundtrack: Break Free is made available for download from Amazon in North America and Europe.
- 2012 — Sonic Rush Original Groove Rush is made available for download from Amazon in North America. Sonic Riders Original Soundtrack "Speedbeats Grand Prix" and Sonic Riders Shooting Star Story Original Soundtrack "Zero Gravity Tracks" are made available for download from Amazon in North America and Europe.
- 2013 — Sonic the Hedgehog 2 is released for Android devices and iOS in North America and Europe.
- 2017 — Sonic Forces Original Soundtrack - A Hero Will Rise and Sonic Forces Vocal Traxx - On the Edge are made available for download from Amazon in Japan.
- 2019 — Chao In Space, a one-shot animated short, is released on YouTube.