"Opoona" was developed by ArtePiazza, a Japanese game company responsible for creating and porting games in the "Dragon Quest" series for Enix.Artepiazza was asked by publisher Koei "to create fun and unique visuals that convey the enjoyment of an RPG in a simple fashion" in place of using state-of-the-art CG and hardware technology available at the time of the game's production.