​The Ancient Gods – Part One is the first campaign expansion for the critically acclaimed DOOM Eternal. Your war is not over… The legions of Hell have razed the heavens, threatening to expand across dimensions. Battle your way back to Urdak and decide the fate of the cosmos. Your mission is now your own. NEW MISSION Experience a new mission in your eternal fight against evil. Unleash your vengeance, restore order to the heavens and unearth the corruption that has thrown the universe into chaos. NEW LOCATIONS From the decks of the UAC Atlantica on Earth to the Blood Swamps of Hell to the demon-infested Urdak, you will visit epic new locations to battle the armies of Hell.