Looking for a good place to grab Halo 3 come launch? It probably wouldn’t hurt to keep Wal-Mart on your mind then. Not only is the giant retailer promising plenty of copies of the game, stores will have special checkout lanes just for Halo 3. As a little extra bonus incentive to get you to purchase your copy of Halo 3 at Wal-Mart, you’ll score a free Halo 3 dog tag when you purchase the game. As always, quantities at each Wal-Mart retailer are limited. Head over to Wal-Mart for more information.