There's the kernel of something really interesting in The Spiderwick Chronicles. Glimmers of a free-roaming kids adventure game with RPG overtones, based on actual folklore. Sadly, it only manages to be that game for an hour or so, before steadily becoming less interesting and more generic and annoying, culminating in an ending that is absolutely cruel considering the age of the intended player.
In terms of gameplay, it's better than the usual game-of-the-film efforts - Stormfront's last entry was the woeful Eragon - but it's the gulf between potential and reality that makes this one sting.
