Mutations

Mutations is the name for a new set of game modes scheduled to appear alongside the new campaign, The Passing in Left 4 Dead 2. The Mutations are special game modes, which alternate each week. For example, for one week, Mutations may feature Realism Versus (presumably combining the two modes for a more challenging experience Survivor-side in Versus Mode), and the next week it could be Chainsaw Madness; a game mode giving all Survivors a Chainsaw with unlimited gas. It is only available to those who have downloaded The Passing.

There are over 20 different Mutations planned, and playable on all Left 4 Dead 2 Campaigns.

So far, the following have been revealed on Valve's blog:


 * Realism Versus
 * Chainsaw Madness

