The Anacrusis, one of many Left 4 Dead-inspired video games on the market today--but arguably the best of them as it comes from former Left For Dead (L4D) developers who clearly know how to make such a game--has added Versus mode in a new and free update now available on Xbox and PC.

Just like in L4D, Versus mode in The Anacrusis lets players take control of the monsters typically reserved for PvE modes. In the case of Stray Bombay's sci-fi co-op shooter, that means playing as aliens such as the Gooper, the Spawner, the Flasher, the Grabber, and the Brute.

Teams will take turns trying to stop each other from completing a level by using methods that could be described as "sanctioned griefing." To the L4D-acquainted, the game's UI will be quite familiar, with enemy human characters silhouetted through walls for the alien team to stalk as they plan coordinated attacks on the Star Trek-ish crew.