Set in the award-winning Fallout universe, Fallout Shelter Online is an evolution of the original strategy RPG, with all-new hero teams, gameplay, and PvP. Fallout Shelter Online puts you in control of a state-of-the-art underground Vault from Vault-Tec Corporation, used to protect the population from total nuclear annihilation. Build a thriving Vault, recruit legendary Fallout heroes, explore the Wasteland, and solve the mystery of the missing Overseer.