With Valve offering up weekly "Mutations" in its zombie apocalypse shooter Left 4 Dead 2, the gameplay variety will flow as thick as Boomer bile. But will Valve go this far out, adding Jockey races to the game?

Jockey Riders is a fan made variation on Left 4 Dead 2's sprint to the safe room with a rare Zombie and Survivor cooperative twist. The goal is to make your way to the safe room as a team, one Jockey special infected, one human. Players must control the Jockey-ridden Survivor in tandem, which may not be as easy as it sounds.

Valve, what do you think? Worth a Mutation?