FPS game in which you defend Earth from monsters. You shoot the monsters with a double-barrel shotgun and other weapons and move through various buildings made of brick and stone. You make your way to the underground where the monsters came from and rid the planet of their presence.

FPS game in which you defend Earth from monsters. You shoot the monsters with a double-barrel shotgun and other weapons and move through various buildings made of brick and stone. You make your way to the underground where the monsters came from and rid the planet of their presence.