Not as good as the book or movie.
Gameplay: You get to control all four of the children from the movie based on C.S. Lewis's classic books. The game plays out as a dungeon crawler with a lot of repetitive features that can keep you uninterested in the overall story.
Graphics: They're not bad, but they're not good either. There isn't a lot of detail in the game and it game get you bored very quickly.
Sound: The sound isn't that great either. 'Nuff Said.
Overall, If you like the movie or you're younger and like the movie, check it out. It's pretty boring, but that's my opinion. Definitely not a good movie-to-video game translation.