The Sega Master System version of Fantasy Zone was once available on the Wii Virtual Console but it's no longer available due to the Wii Shop Channel being shutdown.
The Sega Master System version of Fantasy Zone is available on the Sega 3D Classics Collection but the player will have to go to the Extras on the Main Menu, tap the lower left part of the touchscreen to get Fantasy Zone unlocked. This version now has a save state feature for getting through this difficult game.
The Sega Master System version of Fantasy Zone is now included on the unofficial Sega Genesis Flashback HD 2017 console licensed by Atgames and now has a save state feature for getting through this difficult game.
The Arcade version of Fantasy Zone is included on the Sonic's Ultimate Genesis Collection for Playstation 3 and Xbox 360 and now has a save state feature for getting through this difficult game.