In 'Hell-O, Who's There?', players assume the role of Philip, an anxiety-ridden telemarketer who begins receiving strange calls from a mysterious entity claiming to be an escaped soul from Hell. Each call is a twisted interactive conversation, where players must navigate through absurd, darkly humorous scenarios while balancing their sanity and moral choices. As players make decisions that affect the outcome of these otherworldly calls, they'll uncover the ominous truth behind the entity's existence, leading to multiple endings that test their resolve and humor in the face of supernatural absurdity.