I just picked up a copy of Scribblenauts by 5th Cell for the Nintendo DS and it’s incredible.
In each level, you spell out an object that you want placed into the game. Then you interact with it and use it to complete the level (or just mess around with). There are over 22,800 possible objects. That’s a lot of words and a lot of unique art content. It’s entertainment value is directly related to your imagination, so be as creative as you can and you’ll have a blast.