Fantasy Zone is a 1986 horizontally scrolling shooter video game developed and published by Sega for arcades. It is the first game in the Fantasy Zone series, and was later ported to several home consoles, including Sega's Master System. The player controls a sentient spaceship named Opa-Opa who fights an enemy invasion in the titular group of planets. The game contains a number of features atypical of the traditional scrolling shooter. The main character, Opa-Opa, is sometimes referred to as Sega's first mascot character.