In celebration of a new batch of DLC for the game, Killing Floor is free to play for all Steam users for this weekend. If you decide to buy the game, it’s also 25% off. In case you don’t know what the game is about, I suggest you mentally combine Left 4 Dead, Horde mode from Gears of War, and the SAS voice acting from Call of Duty 4.

I’ve just been playing the game for the first time, and I must say it’s rather enjoyable. The guns feel powerful and the melee weapons are a blast to use. It’s quite challenging, too; plenty of monsters swarm in on you from all sides, which can get pretty chaotic. It looks awful, though, and the movement is a little clunky. Also, all the maps are incredibly dark, but with harsh light sources- I got annoyed at looking into a light and blinding myself constantly.

Still, despite the apparent lack of polish, I had a good time. I’ll most likely be going back and playing some more. I suggest that anyone who can run the game does so; the worst that can happen is that you don’t like it. It’s free, after all.