You can choose between two characters, each with a specific weapon. During the game you must shoot your opponents and move your character to avoid enemy fire.
The intergalactic warriors are in the middle of a fierce battle against aliens. The extra-terrestrials have invaded our planet and started to destroy everything. You must purge them from the planet. These guardians (that's what we call the earth warriors) are preparing to clean up our planet and protect it from harm; to do this, they need your help. But watch out: Their boss, the Fatboy, will not let you achieve your goal.