Fantasy Zone was released in March 1986.
The game's main character Opa-opa makes a cameo in 'Zillion' a science fiction anime T.V. series from the 80's, and in the Sega Dreamcast games Shenmue (1999) and Shenmue 2 (2001) as a collectable figurine.
The Stage 1 music was recycled in the Sega Mega Drive role-playing-game "Phantasy Star 4".
The shop music in Fantasy Zone, is recycled in several other Sega games such as 1988's Hot Rod, 1989's Out Run Turbo, and the Sega Genesis/Mega Drive port of Super Hang-On (the tune plays in the shop which is in the console exclusive career mode).
Soundtrack releases :
Feb 25, 1987 - Sega Game Music Vol.2 [28XA-108]
Oct 18, 2000 - Sega Game Music Vol.2 [Legend Series] [SCDC-00052]
Sep 11, 2008 - Fantasy Zone Ultra Super Big Maximum Great Strong Complete Album [WM-0604~7]