DayZ was one of those really awesome mods that turned into a phenomenon. Work on a new version of the game sans ArmA II began a year and a half ago and now, now you'll be able to try it out for yourself.
Early access for DayZ is now up on Steam for $29.99, which nets you the game in its alpha stage. Now, be aware this is a work in progress and you'll probably run into many, many bugs. In either case, you can get in on the action early and take part in a highly anticipated zombie survival game.
Travis saw the game at E3 and he's pretty excited about it. I guess you can consider this an early Christmas present to him and the fans who have been waiting a while for this to come to light.