The game picks up were the original left off. The game follows Owen as he searches for his missing family after his car broke down. Now trapped in haunted house plagued with demonic apparition's. Your mind is a mess and only a feeling of being haunted remains. You must escape. Key features: Excellent optimization Puzzles Reading notes Use of keys Atmospheric music Steam achievements Agoraphobia “Knock Knock ” is a physiological survival horror game. IMPORTANT NOTE. The game was developed by one person and Unreal engine 4 was used.