Pro Manages to communicate circumstance and casualty in a unique way
Being completely devoid of text, dialogue, and explanation Limbo manages to communicate circumstance and casualty to the player in a simple way not found in other games.
Having a game completely devoid of those three things is hard but Limbo manages to pull it off perfectly.
Pro Astonishing sound design
The sound design is simply great. Even though there's virtually no soundtrack to speak of, the sound effects do a great job of creating the perfect atmosphere in which the players immerse themselves.
What's more is that if you pay close attention to the sound cues while solving a puzzle, you will find out that the sound effects are quite helpful in reaching your objective.