Anniversaries/January 20
From Sonic Retro
January 20 (add)
- 1996 — Issue #70 of Sonic the Comic is released in the United Kingdom.
- 1999 — Sonic Adventure "Digi-LOG Conversation" Original Sound Track, an album, is released on CD in Japan.
- 2006 — Sonic Rush Saikyou Kouryaku Guide, a strategy guide, is published in Japan.
- 2010 — Issue #12 of Sonic Universe is released in North America.
- 2016 — Sonic Boom 04 - L'épouvantable Todd, a novel, is published in France.
- 2022 — Sonic the Hedgehog Volume 9: Chao Races & Badnik Bases, a trade paperback from IDW Publishing, is published in the United Kingdom.