Until Dawn 20 Minute Developer Gameplay Walkthrough
More info about Until Dawn-
Until Dawn is an upcoming adventure survival horror video game being developed by Supermassive Games to be published by Sony Computer Entertainment for the PlayStation 4. It was originally scheduled to be released on the PlayStation 3 and feature PlayStation Move support, but in August 2014, the game was reintroduced as a PlayStation 4 exclusive. It is set to be released worldwide in August 2015.
Until Dawn is designed to be replayed multiple times as players will not be able to understand the full version with only just one playthrough. Each playthrough will last about nine hours in length and the game mechanics will utilize a new in-game system called the “Butterfly Effect” in which any choice of action by the player may cause major unforeseen consequences later on. Throughout the game players will make difficult decisions during ethical or moral dilemmas such as to sacrifice one character in order to save another as one example. The “Butterfly Effect” system blurs the line between right and wrong decisions and it is possible for players to keep all eight characters alive through to having them all killed, allowing for many different paths and scenarios players can take and seemingly endless multiple endings. Until Dawn will have a strict auto-save system to prevent players from reloading a previous save file to an earlier point in the game if they regret an in-game decision that they have made.