From Sonic Retro
June 1 (
- 1994 — The Sonic Collection, a strategy guide, is published in North America.
- 2000 — Issue #85 of the Sonic the Hedgehog comic series by Archie Comics is released in North America.
- 2003 — "Nagisa no Amy", the 9th episode of Sonic X, airs in Japan.
- 2010 — Sonic 3D: Flickies' Island is released on Steam in North America, Europe and Australia.
- 2011 — The 225th issue of Archie Comics' Sonic the Hedgehog comic series goes on sale in North America.
- 2021 — Sonic the Hedgehog: Bad Guys, a trade paperback by IDW Publishing, is released in North America and the United Kingdom.