2K Games and Gearbox have concocted an interesting little advergame called Mount Jackmore, where players shoot at a giant sculpture of Borderlands 2 antagonist Handsome Jack. Beneath the rock you'll find prizes that run the gamut from in-game items to actual copies of the game. There's also a small chance you could win one of those sweet loot chests.
But, there's a catch: US gamers can't play Mount Jackmore – the promotion is open to people from Australia, Belgium, Denmark, France, Germany, Luxembourg, the Netherlands, Norway, Russia, Spain and the UK aged 18 years or over. Also you only get a limited amount of ammo each day to play. You start with 100, and if you expend them then you'll get another 100. The only other way to get more bullets in a day is to refer a friend, then you'll get an additional 100.