SCP EVENT CLASSIFIED is a multiplayer horror shooter in which players are dropped into a secret facility where they assume the roles of soldiers, prisoners, scientists, or monsters. Each role has unique objectives that inevitably clash with others, creating tense player-versus-player scenarios where cooperation and betrayal are equally viable strategies. The game has exceptional replayability thanks to dynamic systems - maps, items, anomalies, and even quest objectives change every round. A social stealth system allows players to steal clothing and disguises, allowing prisoners to disguise themselves as scientists to fool soldiers, though monsters remain indiscriminate killers. Role relationships change between rounds, making interactions unpredictable.