Anniversaries/November 9
From Sonic Retro
November 9 (add)
- 1995 — Knuckles' Chaotix, the fourth stand-alone comic special published by Archie Comics, is released in North America.
- 2003 — "Perfect Chaos no Sakebi", the 32nd episode of Sonic X, airs in Japan.
- 2004 — Sonic Heroes Official Soundtrack is released on CD in North America.
- 2005 — Sonic Underground Box set, a DVD, is released in South Korea.
- 2012 — Sonic the Hedgehog CD is released for Windows Phone in Japan, North America, and Europe.
- 2013 — Mario & Sonic at the Sochi 2014 Olympic Winter Games is released for the Wii U in Australia.
- 2016 — Issue #288 of the Sonic the Hedgehog comic series by Archie Comics is released in North America.
- 2017 — Sonic Forces is released for the PlayStation 4, Xbox One, Nintendo Switch and PC in Japan.
- 2021 — Sonic the Hedgehog 30th Anniversary Celebration: The Deluxe Edition is published in North America and the United Kingdom.