From Sonic Retro
April 30 (
- 1994 — Issue #25 of Sonic the Comic is released in the United Kingdom.
- 1997 — Issue #103 of Sonic the Comic is released in the United Kingdom.
- 2007 — Sonic Jump is released for mobile devices in North America.
- 2008 — Book One of the Sonic Select trade paperback series is released in North America.
- 2010 — Partie 3 of Les Aventures de Sonic and Partie 4 of Les Aventures de Sonic, both DVDs, are released in France.
- 2018 — "Sonic and Tails", the second episode of Sonic Mania Adventures, is released on YouTube.
- 2020 — "Hoshi no Umareru Tokoro", the 78th episode of Sonic X, airs in Japan.