Anniversaries/March 1
From Sonic Retro
March 1 (add)
- 1999 — Sonic Adventure Perfect Guide, a strategy guide, is published in Japan.
- 2001 — Sonic Shuffle is released for the Dreamcast in Germany.
- 2003 — Sonic Mega Collection Saikyou Kouryaku Guide, a strategy guide, is published in Japan.
- 2007 — Desperately Seeking Sonic, a novel based on Sonic X, is released in North America.
- 2012 — Mario & Sonic at London Olympics is released for the Nintendo 3DS in Japan.
- 2013 — Sonic the Hedgehog 4 Episode I is released for Blackberry devices in North America and Europe.
- 2022 — Sonic the Hedgehog 2: The Official Movie Poster Book, Meet My Friends! (And Enemies), Let's Back Up! Speeding Through My First Movie, and Sonic the Hedgehog 2: The Official Movie Mad Libs are released in North America.
- 2023 — Issue #58 of the Sonic the Hedgehog comic series by IDW Publishing is released in North America.