The key features of this Extended Edition are:
    -         A haunting tale of psychological terror
    -         Physics-based environmental puzzles
    -         Eight possible endings, each determined by the player’s action
    -         New environments, puzzles, interface and music
    -         Improved Graphics
    -         New in game character: “The Wife Doll” with own AI
    -         New Game Over state

Extras included:
    -         Poster with alternative cover artwork
    -         Complete soundtrack on CD
    -         Art book for the game