Anniversaries/September 20
From Sonic Retro
September 20 (add)
- 2000 — Issue #190 of Sonic the Comic is released in the United Kingdom.
- 2002 — Eggman no Kazuate Panic! is released for i-mode 503i compatible phones through Sega's Sonic Cafe portal in Japan.
- 2003 — "Missile Wrist Rampage", the 3rd episode of Sonic X, airs in North America.
- 2006 — Issue #12 of the comic series Sonic X is released in North America.
- 2013 — Sonic & Sega All-Stars Racing is released for Android in North America and Europe.
- 2017 — Sonic Forces: Speed Battle is released for iOS and Android worldwide.
- 2018 — Sega Ages Sonic the Hedgehog is released for the Nintendo Switch worldwide.