This is an action game in which players assume the role of a young boy who recruits his friends to save the world from an invading swarm of creatures. Players use guns to shoot waves of attacking zombies, skeletons, evil snowmen, mummies, and impish creatures that burst into hearts when killed. In the midst of the frequent shooting, there are realistic gunshot sounds, bright explosions, and destruction of the surrounding environment. Players are scored for each successful shot. Some of the female characters wear revealing costumes, and their breasts bounce slightly during victory poses.