Winter!: Prepare for holiday gaming!
Great fun for teamwork gameplay and co-op, 10 waves of zombie experiments with each building up to more advanced experiments and a larger number of them till the end to boss battle with the patriarch, great fun and at times can either be relaxing or challenging (depending on the map). I just wish there was an ability to make lobbies for friend only games instead of servers, as some players consist mostly of 13 year olds singing into their mics. :-/
Game Traits applied to Killing Floor (PC) by CGJaguaR