Valve has revealed the latest Mutation in Left 4 Dead 2, and it's called Follow the Liter.
In it, the rules of Scavenge have changed, with only one group of fuel cans spawning at a time.
While the Survivors will know where to go for 'em, the Infected will too.
Should be harrowing enough.
Speaking of Mutations, half a million members of the L4D2 community voted to keep Realism Versus.
Mutations come out on Fridays, and who knows what Valve will have in store for us next week.