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 Sonic X comic series is released in North America.
- 2012 — Volume 3 of Knuckles the Echidna Archives is released in North America.
- 2013 — Sonic Generations is made available for digital download on the Nintendo eShop in Europe.
- 2015 — "Fire in a Crowded Workshop", the 43rd episode of Sonic Boom, airs in North America.
- 2022 — Sonic Frontiers - Main Theme EP, an album, is made available digitally on Mora and Spotify in Japan.