Borderlands 2

A new era of shoot and loot is about to begin. Play as one of four new vault hunters facing off against a massive new world of creatures, psychos and the evil mastermind, Handsome Jack. Make new friends, arm them with a bazillion weapons and fight alongside them in 4 player co-op on a relentless quest for revenge and redemption across the undiscovered and unpredictable living planet. Five years after the events of Borderlands, a valuable mineral called "Eridium" starts flourishing through Pandora's crust. Handsome Jack, the leader of the Hyperion Corporation, secures this new resource and uses it to rule over Pandora with an iron fist. Meanwhile, rumors of an even larger Vault hidden on Pandora spread across the galaxy, drawing a new group of Vault Hunters to the planet in search of it.