In conjunction with Microsoft's Halo 4 launch on the Xbox 360, Walmart and T-Mobile are offering fans of the game an exclusive promotional offer. Between November 6 and December 31, customers who purchase a T-Mobile pay-as-you-go unlimited talk and text plan valued at $30 per month or more will receive an exclusive in-game Halo 4 Spartan emblem. The T-Mobile Walmart portal has more information on the promotion.