The free word game, Word Hunt, is the best way to improve your vocabulary and improve your spelling. You can play it in two different modes:

The first one is the easiest one, where the challenge is to find the hidden words in the grid of letters. The second one is more challenging and will give you a more difficult challenge. The challenge will be generated randomly, so each time you'll play the game, it'll be different.

The gameplay is very simple and addictive. You'll need to swipe your finger in order to find the hidden words.