Criminally short but lots of fun. The story concepts seem pretentious at first blush but thankfully aren't really presented in a way that I'd call that. Yeah, it's typical 'history of life and the universe' type stuff, but it's framed more as just a set of ramblings from a rogue AI rather than shouting at the player that the game is 'deep'. No, it's all about the sick beats and the silky smooth difficulty curve.