Anniversaries/April 18
From Sonic Retro
April 18 (add)
- 1994 — Issue #12 of the Sonic the Hedgehog comic series by Archie Comics is released in North America.
- 2001 — Issue #96 of the Sonic the Hedgehog comic series by Archie Comics is released in North America. Issue #205 of Sonic the Comic is released in the United Kingdom.
- 2007 — Issue #174 of the Sonic the Hedgehog comic series by Archie Comics is released in North America.
- 2012 — G Sonic is released on the Nintendo 3DS Virtual Console in Japan. Issue #39 of Sonic Universe is released in North America.
- 2015 — "The Curse of Buddy Buddy Temple", the 22nd episode of Sonic Boom, airs in North America.
- 2018 — Issue #3 of the Sonic the Hedgehog comic series by IDW Publishing is released in North America.
- 2019 — Sonic the Hedgehog Tome 2: Le retour du Dr. Eggman, a trade paperback, is released in France.