Anniversaries/October 7
From Sonic Retro
October 7 (add)
- 1998 — Issue #140 of Sonic the Comic is released in the United Kingdom.
- 2003 — Sonic N is released for the N-Gage in North America and Europe.
- 2005 — Sonic Gems Collection is released for the PlayStation 2 in Europe.
- 2009 — Issue #205 of the Sonic the Hedgehog comic series by Archie Comics is released in North America.
- 2010 — Sonic the Hedgehog 4: Episode I is released for iOS in North America and Europe.
- 2017 — "Lair On Lockdown", the 98th episode of Sonic Boom, airs in North America.
- 2020 — The first issue of Sonic the Hedgehog: Bad Guys goes on sale in North America.