I can shortly describe it as a kind of mix between a "cluedo" and a fantastic murder story. I think the story grabs you, specially at the middle-end of the game when you are familiar with the characters and the plot. The graphics and soundtrack are great and contribute to provide and immersive experience. The only drawback, for me, is that there are too much murders to solve by elimination (not by clues). In summary, the game is special, innovative and well ended.
I have returned to the video games thanks to Limbo. It is an amazing game with a fantastic atmosphere. Playing Limbo you will reason about the puzzles but also think about the live and death. You will feel the basic emotions of loneliness and fear. Totally recommended for those who are looking for a different kind of game.