The Last Guardian is a side-scrolling space shoot'em up game. The player is a space shuttle pilot attacking alien spacecraft equipped with numerous cannons and guarded by fighter brigades. The shuttle is equipped with a single cannon and the booms launcher. During the flight the pilot may find a lot of useful enhancements, such as double cannons, extra disruptor bomb, shield charger, extra capacity, cloaking field, temporary immortality, craft crippler, energy crystal, shield upgrade, bonus guardian, antimatter and many others. After a successful raid on an enemy cruiser the player must get through the asteroid belt and land in docking bay.