Puzzles Nice puzzles. Your mileage will likely vary, but not too much to the negative as I'm far from an expert in the genre. In an interesting surprise in an adventure game, the sets for Grim Fandango are all 3D-rendered and things look much smoother and scroll better if you have a 3D accelerated system. Each set is beautifully rendered and as believable as the afterlife can be. It also means that usable objects don't stand out quite as much as they can in other games of this type.
Nothing stands out about the sounds of the game, which is actually a good thing.
One of the companions you acquire can get a bit annoying if you're stumped and have to listen to his fake car noises, but the annoyance is mostly at being stumped so long. I highly recommend using the 3D acceleration option. The documentation is colorful, useful, and to the point. Once you find it, that is. I almost threw it away with the other in-box advertisements.