Fantasy Zone is a surreal arcade game released by Sega in 1985. It was later ported to a wide variety of consoles, including the Sega Master System. The player controls a sentient spaceship named Opa-Opa who fights nonsensical invader enemies in the titular group of planets, full of settings atypical of the traditional scrolling shooter and pastel colors; for that reason, it is occasionally dubbed a "cute 'em up".