From Sonic Retro
February 15 (
- 2004 — "Sonic Battle Kesshou!!", the 46th episode of Sonic X, airs in Japan.
- 2006 — Sonic Reversi Hyper is released for Vodafone Live! (256KB) compatible phones though Sega's Sonic Cafe portal in Japan.
- 2010 — Sonic & Knuckles is released on the Wii Virtual Console in North America.
- 2012 — Issue #37 of Sonic Universe and Sonic Universe Graphic Novel Series Volume 2: 30 Years Later are released in North America.