This is a beautiful, haunting, and memorable game, a worthy follow-up to Limbo. Its puzzles, although rarely difficult, are engaging complements to the story. The real achievement of this game, though, is the way that it crafts its narrative: detailed environments convey the bizarre world that you travel through; introspective moments are filled with minimalist sound design and just the barest touches of music; and the things you must do to complete your journey force you to confront the realities of humanity, freedom, and existence.