This game tells the story of a spaceship about to attack Earth, and we, as heroes, must save the planet. But there are three levels:

Easy: At this level, you must fight 10 enemies, and then you win.

Medium: You must fight 20 enemies and one mini-boss to win.

Hard: You must fight 50+ enemies, 10+ mini-bosses, and one big boss to win.

The hero can fire high-speed bullets with a reload time of 0.001 seconds.

The hero can also move to position his aim.

If you shoot an enemy, mini-boss, or big boss, they will explode.