The game - Castle of Illusion Starring Mickey Mouse - Game Gear | GG

And here is my favorite series of toys - about Mickey Mouse! Minnie Mouse has been taken hostage by the evil witch Mizrabel! You simply have to save your mouse (and also find 7 gems along the way). The graphics are top notch, even though this is the first Mickey game on a Sego console. You, as always, save your beloved!

It was released for Genesis/Mega Drive, Master System, Game Gear, Sega Saturn.