Until Dawn is an interactive drama and survival horror video game developed by Supermassive Games and published by Sony Computer Entertainment. Released in 2015 exclusively for the PlayStation 4, the game puts players in control of eight young adults who have to survive on Blackwood Mountain when their lives are threatened. It is known for its branching storylines and multiple endings, which are determined by players' choices throughout the game. The use of the 'Butterfly Effect' system influences the narrative, leading to a unique gaming experience tailored by the decisions made.