Anniversaries/October 18
From Sonic Retro
October 18 (add)
- 1994 — Sonic & Knuckles is released for the Sega Mega Drive in North America, Europe and Australia.
- 1996 — Sonic's Schoolhouse is released for Windows PCs in North America.
- 2000 — Issue #192 of Sonic the Comic is released in the United Kingdom.
- 2003 — "Party Hardly", the 7th episode of Sonic X, airs in North America.
- 2004 — Sonic Underground The Complete Series, a DVD, is released in the United Kingdom.
- 2006 — Issue #13 of the Sonic X comic series is released in North America.
- 2007 — Sonic Rush Adventure is released for the Nintendo DS in Japan. Sonic Rush Adventure Original Soundtrack, an album, is released on CD in Japan.
- 2011 — Double Rivals Attack Pack! is released for the PlayStation Portable in North America.
- 2012 — Sonic Jump is released for iOS worldwide, and for Android in Japan.
- 2013 — Sonic Lost World is released for the Wii U and Nintendo 3DS in Europe.