RATMAN

"RATMAN is a survival horror FPS set in a sewer system, where you must investigate a cryptid creature rumored to have eaten homeless people and a military officer. Armed with a variety of weapons and controls such as WASD movement, leaning, running, and sprinting, fight for your survival against the sewer's mutated inhabitants in a VHS found footage style. Your goal: make it out in one piece, or fall prey to the monstrous Ratman and his minions."