oasis789: I went to the website and there wasn't a whole lot of documentation but from the screenshots, its hard to tell the difference between scrabble and bookworm, which are both about word length and letter bonuses. not a bad thing, i liked bookworm adventures, and this one has more rpg layers on top of it. both spellirium and wordrealms are also word contextual.
Namely, Scrabble requires you to put words together out of a random set of letter tiles, whereas Bookworm requires you to find words in a board of letter tiles.
Here's a video that'll give a bit more info on it.
http://www.youtube.com/watch?v=wGAtjwvwOdU If I can manage to afford it soon, I'll leave some clarifications and impressions, too.