If you enjoyed the film, you will probably love this game. True, it is a little on the easy side - my 7 year old son completed it within 5 days of us buying it, but it's beautifully made, and very entertaining.
I was also impressed that most of the characters in the game are voiced by the same actresses / actors who appeared in the film. Stephen Fry plays a particularly good role as the Cheshire Cat, and has some nifty invisibility skills which come in very handy during the game.
I am a little puzzled as to why there's an age recommendation on this game of 12+, as there's no huge skill required to complete it, or violent scenes (in my opinion) that i would be unhappy to let any child of 5+ see. Afterall, the film is rated a PG, and the game stays pretty close to the original concept of the film.