http://www.pcgamer.com/warhammer-end-times-vermintide-is-free-to-play-for-the-next-three-days/

You're probably aware that the sequel to Warhammer: End Times – Vermintide, the beautifully chaotic co-op FPS, was unveiled this week, and is out next year. But you might not be aware that the brilliant original is free-to-play until Wednesday. 

In many ways it's like Left 4 Dead with a Warhammer skin, but that's no bad thing. You control one of five characters battling through waves of angry ratlings called the Skaven. Each character has a unique playstyle, and individual weapons have special abilities or damage boosts. The emphasis is on melee combat, and crushing Skaven skulls with a warhammer feels as good as it should.