Ultimate Word Search is a collection of word search puzzles. There are lots of different puzzles which contain words from categories that range from animals and clothes to countries and elements. There are different themes that completely change the way the game looks. You can change them from the Options menu, and here you can also disable sounds and browse through the word categories.
Once you start the game, you will see a word puzzle, and there are all the words below it that you have to find in that puzzle. They can be placed horizontally, vertically or diagonally. To select a word, you have to click on the first and last letters of that word, in any order. When you do that, the word will be marked in the puzzle and crossed out from the words that you should find. Finding words is really challenging and it takes time.
I like the fact that you can look up words on different sites of online dictionaries and even on Wikipedia.
In short, Ultimate Word Search is a great word puzzle game. It is only $0.99, and it comes with a ton of different puzzles. It has word look-up features and it is challenging.