Gunstar Heroes is a run-and-gun shooter video game developed by Treasure and published by Sega. It was Treasure's debut game, originally released on the Sega Genesis in 1993. The game's premise is centered around a pair of characters, the Gunstars, in their efforts to stop an evil empire from recovering four powerful gems. The characters can fire guns and perform a series of acrobatic maneuvers to fight enemies across each stage. There are four weapons in the game which can be combined with one another to create different shot types.