The site: WouldYou72.com, puts fans of various things (at this point only a Halo episode is planned) in situations where they have to complete some sort of 72-hour-Iron Man challenge to win a prize. For Aleksandar Crnogorac, the challenge is simple: play Halo 3 for 72 hours straight, without taking a break for more than 5-10 minutes. If he completes the challenge? Well, in that case he is the proud owner of a new Xbox 360 and Halo 3.
To make things interesting, the site's operators will open the contest to votes as to what Aleksandar should do, and what kind of stipulations are placed upon challenges. (For example, one that he'll face will be that in a 10 minute timeframe, every time he dies he needs to do 10 push-ups.)