This is a music and rhythm simulation game in which players assume the roles of avatars attempting to vanquish evil by performing rock songs. Players can perform songs using on-screen avatars with various instruments. Players simulate playing guitar, bass, or drums and are scored based on the accuracy of notes hit. When players are successful, their avatars are sometimes depicted in the background attacking giant robots (e.g., zapping them with beams of light, hitting them with axe-like weapons). Some of the players' outfits are revealing, and the in-game camera occasionally lingers on female characters' legs and posterior. Some song lyrics contain references to violence (e.g., "I killed my dad in a con gone bad," "Brother will kill brother, spillin' blood across the land, killin' for religion," "The last request of my life is to die killing my enemies," and "They killed my wife and my baby."). Some songs contain references to sexuality (e.g., "I wanna make love, you never stop" and "Eyeing little girls with bad intent . . . Watching the frilly panties run").