Anniversaries/October 11
From Sonic Retro
October 11 (add)
- 2003 — "Techno Teacher", the 6th episode of Sonic X, airs in North America.
- 2010 — Sonic the Hedgehog 4 Episode I is released for the Wii's WiiWare service in North America.
- 2022 — Sonic the Hedgehog: Imposter Syndrome, a trade paperback by IDW Publishing, is released in North America.
- 2023 — Issue #65 of the Sonic the Hedgehog comic series by IDW Publishing and Sonic the Hedgehog: Halloween Special, a one-shot, are released in North America.