The drawing is divided into three tiers of time so even those who don't have much time to play can get in on the action. The three categories are one hour or more, 25 hours or more, and 50 hours or more. Xfire will draw five winners at random from each tier and give away some pretty nice loot both real and virtual: headsets, mice, in-game upgrade codes, and more.
Play 2 Win is going on now and lasts until May 29th, so you have plenty of time to join -- your membership is your contest entry -- and start playing to whichever tier you prefer. Check out the official rules, and good luck!