Friend of mine couldn't convince me to buy it, so he bought it for me
It's an interesting mod. Lots of walking on foot, and the map is HUGE. Lots of bugs and whatnot (random zombie spawns in front of you when you're in towns, zombies hitting through walls, delayed reactions from zombies when you shoot them, etc.), and night time is extremely difficult if you start out with a fresh spawn. I didn't expect too much, considering that the mod is in alpha.
Tons of sneaking around zombies, and then freaking the fuck out when they swarm you after hearing a gun shot. Maps are somewhat useless when you find them, as they don't pinpoint your location. You just have to remember where you have spawned (They tell you what region you're in when you start out). Other than sneaking around and looting, there isn't much else to the game.
DayZ map: