For the third year in a row Tripwire has released a special holiday update for Killing floor during their “Twisted Christmas” Event. The update is free and comes down automatically on steam. There is apparently a free to play option as well for those who haven’t already purchased the game.
So if you like zombies with Santa hats and murderous gingerbread men this may be right up your alley.
The event goes on till January 3rd, 2013
Check out the gameplay video below for a sample.