I was heavy into this game until I came across Landmark, and now I do not bother with 7 days.
Do not get me wrong, it is a good game and offers so unique and nice features but there is so many weird problems with the game and the way it is designed. Example, a road/ hill.. It is not a slope but sharp steps to run up, character with weird poison when you are not poisoned, building over an area and then you walk across it and suddenly you fall through and things blow up (Petrol station) shooting sounds odd and many many more things like this.
Really the game is good and I have many hours myself with friends, it just needs more work and lots more things to do and for that I am heavy as hell into Landmark.