An amalgamation of just about every game genre in history, starting off as a first person shooter you then find yourself having to race your car against other enemies to get to the abandoned city that is the site of a deadly horror environment where, upon getting to safety, you need to find a way to lead the remaining human colonies (after beating their toughest leaders in a beat-em-up tournament) to safety via a point & click adventure followed by an RTS, after which you fly your space shuttle back to HQ, avoiding space pirates along the way, and when you get to your destination your commanding officer threatens to have you arrested unless you can impress him on the guitar, and somewhere in the middle of this you'll get stuck on a desert island and have to beat the natives in a game of cricket.
Or alternatively, Zombie Tetris.