So very very short, but great game nonetheless. Impressive feeling, good puzzles.
Puzzles require quite a bit of thinking. You must observe and act. Use both your intelligence and dexterity. Not just mindless jumping around.
The game excels when it comes to feelings. The grim atmosphere. The sad music. While the black/white takes you inside Limbo. However you understand very little of the story and until the very last scene its hard even thinking it has a story. So huge minus here.
I recommend the game.
However. Games like these show the weaknesses of grading systems. How can games like Plants vs Zombies, Limbo or Super Meat Boy score so much. For example in an All times highest graded games on Gamespot Super Meat Boy ranks 2nd well above Starcraft 1 & 2, Dragon Age Origins, Crysis, Mafia, Medieval 2 Total War, etc. It seems very unfair and even stupid... just saying.