Everyone likes discounted games, right? Right! Moreover, everyone loves free games, right? Double right! Well Steam have luckily given us the opportunity to experience both with their weekend deal. Killing Floor is currently free, for this weekend only. The full version can be played from now until Sunday 1PM Pacific Standard Time (Monday, 12 8AM for us in Sydney, Australia). After that, players can buy the full game for the discounted price of $4.99 USD or get a pack full of DLC for $7.98 USD all before Monday at 10AM Pacific (Tuesday 13, 5AM). Head over to the Steam Store by clicking here, and experience the Killing Floor for both Mac and PC.