Choose one of three different characters and get ready to battle through hordes of deadly monsters, including returning favorites such as the Pinky, Cacodemon, and Revenant, as well as new threats like the Sawcubus and Sentinel! Battle towering bosses such as the Cyberdemon, Spider Mastermind, or the Pinkinator! Interact with other survivors of the invasion to get information about your environment and solve puzzles, but beware…not all of them can be trusted!

A mysterious distress signal calls your team—two hardened Marines and a rookie scientist—to a Union Aerospace Corporation research facility on Earth’s Moon, but you were unprepared for what awaits you. The forces of Hell itself have taken hold of the station and its inhabitants! Zombies and demonic monsters roam the halls, killing all who cross their path. Your backup squad is dead. Mysterious scientists conspire against you. Even the facility’s AI cannot be trusted. You are being hunted from all sides. Now, you must fight to survive, and try to stop the invasion—and uncover the truth—by any means available. The fate of all humanity is at stake!