The first apps for the Kindle are a couple of games: Every Word and Shuffled Row.
Every Word - Test your vocabulary as you try to find as many words from the scrambled letters in this fun and fast-paced word game.
Here's how it works. You are given six or seven scrambled letters with the goal of finding as many words as you can. You score points by filling out the words in each empty spot on the board using only the letters that appear at the top of the game board. Keep at it until time runs out or until you fill up the board. The more words you make, the higher your score!
Shufled Row - See how many words you can make from 60 lettered tiles.
The tiles are added to your row one at a time so you'll constantly be working with a new set of letters. After you submit a word, the letters you used will be removed and new ones will be added. Increase your score by using less common letters. Create longer words and increase your score even more.
If you don't use the letters fast enough, they'll disappear and new ones will take their place, so you'll have to decide if you want to play it safe and use short words or try to wait for more letters to form longer words.
These are the first of I'm sure many more apps to come for your Kindle. They are tops in the Kindle Store now, get them. and try them for free.