The player controls the ship, shooting laser to enemies, launching homing missiles and fighting bosses. Each level the enemies differ, more difficult enemies are added and more difficult bosses. Each boss moves on its own unique pattern. Collect power ups like health, missiles, and bomb that kills every visible enemy to clear the stage. Fight through 16 ready levels. Collect the parts from the exploded enemy ships. Use the collected scrap as a currency to upgrade your own ship.