From Sonic Retro
September 13 ():
- 1993 — Adventures of Sonic the Hedgehog begins its syndicated run in the United States.
- 2003 — "Sonic to the Rescue", the 2nd episode of Sonic X, airs in the United States.
- 2010 — Sonic the Hedgehog Spinball and Dr. Robotnik's Mean Bean Machine are released on Steam in the United States, Europe and Australia.
- 2014 — Super Smash Bros. for Nintendo 3DS is released for the Nintendo 3DS in Japan, featuring Sonic as a guest fighter.