Fantasy Zone (ファンタジーゾーン, Fantajī Zōn) is a surreal arcade game released by Sega in 1986. 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. Opa-Opa is sometimes referred to as Sega's first mascot character. The game design and main character had many similarities to the earlier TwinBee, and together the games are credited with the creation of the "cute 'em up" subgenre.