FallenEarth

Fallen Earth is a massively multiplayer online role-playing game set on a post-apocalyptic Earth in the year 2156.
The game takes place in a post-apocalyptic wasteland located around the American Grand Canyon.

Fallen Earth's gameplay features FPS/RPG hybridization, first-person/third person views, hundreds of items including improvised equipment and weapons, a real-time crafting system, various skills and abilities, factions and tactical PvP, all existing within 1000 square kilometers of usable terrain based on real-world topographical maps of the area.