Anniversaries/September 12
From Sonic Retro
September 12 (add)
- 2007 — Sonic the Hedgehog 2 is released for the Xbox 360 worldwide. Issue #24 of the comic series Sonic X is released in North America.
- 2012 — Volume 3 of Knuckles the Echidna Archives is released in North America.
- 2015 — "Fire in a Crowded Workshop", the 43rd episode of Sonic Boom, airs in North America.