This is a simple shooting defense game. Players wield guns to fight in a fixed scene, repelling monsters attacking from above and below. Defeating enemies grants shields and various bullets, using items to strengthen oneself, preventing monsters from crossing the defense line and approaching the treasure chest behind you, and holding the position to complete the defense. Each level also features various weapons like double shots, triple shots, energy shields, melee knives, mines, homing rockets. Hint: The character can also collide with monsters, but it costs health.