Until Dawn has this thing called the Butterfly Effect system that affects your moment to moment decisions that can have immediate or long-term impact on the events of the night.
The way this system is implemented in game means there are thousands of potential branches to every player’s individual story which might make your decisions appear to be inconsequential. Everything you choose can affect how other characters react, potentially with dire consequences as some choices are more obvious but much more difficult, like choosing which friend will live and which will die.

Below is the latest trailer that shows the potential aftermath of your decisions. Only your choices determine who survives Until Dawn…
Until Dawn comes out on August 25th.