Downloading this theme registers eligible gamers for the Marines Sweepstakes. NO PURCHASE NECESSARY. Open only to legal residents of the 50 US or DC ages 17-29. Entry Period Starts: 09:01 a.m. Pacific Time (PT) on 06/02, and ends at 11:59 p.m. PT on 07/01. By downloading this item, you are allowing Microsoft to contact you from time to time about this Sweeps. For details including free, alternate method of entry, see http://www.xbox.com/marines. By downloading the Marines registration theme you agree to receive a one-time email communication from Xbox and the US Marines. Your existing Xbox communication preferences will not be changed.