Anniversaries/May 21
From Sonic Retro
May 21 (add)
- 2003 — Mi-Ra-I, a CD single, is released in Japan.
- 2014 — Issue #260 of the Sonic the Hedgehog comic series by Archie Comics and Issue #11 of Sonic Super Special Magazine are released in North America.
- 2019 — Team Sonic Racing is released for the PlayStation 4, Xbox One, Nintendo Switch and Steam worldwide.
- 2020 — Season four of the Sonic Official livestream premiers on the official Sonic the Hedgehog YouTube channel.