Games like Project Otherside

Games like Project Otherside include Escape the Backrooms, Lethal Company, Backrooms: Escape Together, Outlast, and Five Nights at Freddy's: Security Breach. We matched them by the tags players give Project Otherside on Steam (Horror, Psychological Horror, Survival Horror, Exploration, and Simulation): closest matches first, and among equally close ones the better-known games.