Anniversaries/August 28
From Sonic Retro
August 28 (add)
- 1997 — Sonic Jam is released for the Sega Saturn in Europe.
- 2007 — Sonic no Casino Poker is released for i-mode 70x compatible phones through Sega's Sonic Cafe portal in Japan.
- 2018 — Sonic and the Tales of Terror and Sonic the Hedgehog: Race Against Chaos are published in North America and the UK.
- 2019 — Issue #20 of the Sonic the Hedgehog comic series by IDW Publishing is released in North America.