Where Dead Island and Left 4 Dead are somewhat coddling in the amount of tools they provide you with in order to tackle the apocalypse, DayZ is an unforgiving wasteland rife with death and destruction that doesn't stop to pick you up when you fall, not even for a moment. The ARMA II mode is tough in all the right places, just perfect for you to meet with death face-to-face. It'll find you. If the zombies don't come for you, the other humans will. The sad reality of life is thus -- who's really the enemy? Monsters or your fellow man?