There's an original fantasy or dream like quality in this that you only found in Disney classics of yester years but its captured so well here, a modern 'Bedknobs n Broomsticks' if you will. All the cast are likeable and the jungle aspect really works well, you never see it, just hinted at which is just right, teasing you but not going overboard.
The backstory and ending of the film are really well done too, could of gone on with more 'plays' from the game as there has obviously been previous adventures, but its open ended and adds mystery to the whole idea.
Quite a modern kids classic really with solid work from the crazy and youthful Williams who adds nice emotion to some scenes, he is a good kids film actor.
Oh sure, there are attempts at trying to throw in serious issues like family and that sort of thing, but let's be honest, this film is primarily a showcase for the special effects and the spectacle of seeing wild beasts run amok all over a New England town. The cast has notables like Robin Williams, Bonnie Hunt, Kirsten Dunst, and Jonathan Hyde in it, and, while they give it their best, they don't quite succeed in holding it all together. To his credit though, Hyde is probably the most fun to watch.
This isn't a terrible movie, but even as a kid, I never thought of it as being better than "okay". The film cares more about the effects and action than anything else, and that would be okay if they didn't also try to throw in other stuff. Basically, this is just unbalanced, unfocused, predictable, and kinda silly. If you want to see it, I won't stop you, but don't feel like you need to see it.