Opa Opa is a shoot 'em up game released by Sega in 1987. The game is a spin-off of Fantasy Zone, featuring the same protagonist, a sentient spaceship named Opa Opa. The game has a colorful and whimsical aesthetic, with cute enemies and backgrounds. The game also has a shop system, where the player can buy upgrades and weapons for Opa Opa, such as bombs, lasers and wings.