Anniversaries/June 30
From Sonic Retro
June 30 (add)
- 1993 — The build date of the "v0.20" Sonic Chaos prototype for the Sega Master System.
- 1999 — Issue #10 of the Sonic Super Special comic series is released in North America. Issue #159 of Sonic the Comic is released in the United Kingdom.
- 2010 — Issue #214 of the Sonic the Hedgehog comic series by Archie Comics is released in North America.