Bookworm uses the same formula of most word games, offering a field of random tiles from A to Z, (with 'Qu' combined in to one tile) that players must search through to find words. The tiles are large enough that accurately tapping them with your finger isn’t an issue and you can then either select the rest of your word by tapping adjacent tiles or dragging your finger through them. Lex, the Bookworm mascot accompanies you throughout the game, showing you the score of the current word you have selected. Tapping the selected word removes the tiles from the board. Lex eats them, and sometimes offers a definition of the previous word as more tiles fall from the top.
Bookworm features often imitated but never duplicated gameplay, as well as art and sound design that give Bookworm an element of charm that is missing from the clones. Bookworm has stood the test of time, having been ported to nearly every platform imaginable since its original PC release six years ago. There isn't a lite version available, but you can play the flash game and download both Mac and PC demos on the Bookworm web site.
If you're interested in word games, Bookworm is definitely one you should already own. If you haven't picked it up yet, there's no time better than the present. At 99¢, Bookworm is an incredible value.
App Store Link: Bookworm, 99¢