The terrifying survival horror game 911: Prey features riddles. You play the role of a young person who has been kidnapped and brought to the home of a cannibal maniac. Your goal is to make your way out of the house alive. Look around for anything that can be of service to you as you try to escape from his house. Take extreme caution and cover your tracks so that the psychopath does not figure out what you've been up to.