WarZ was what DayZ should have been. DayZ had the right idea, just terrible implementation. Player caps, maps too big for it not to be an MMO (imagine WoW with 64 players in the entire universe), everybody hacking, horrible Arma engine and control interface (you have to bind a key to do absolutely anything in the game).
WarZ was going to make this much more arcade friendly, like BF3 zombie game. Unfortunately they completely LIED with the product description. This wasnt buyers remorse, this was a scam. They advertises maps between 100-400 sqkm, and only ONE MAP had something like 120 km. The dev's had the balls to actually say "well technically 120 is between 100-400 so we didnt lie" lol wtf seriously?