Mystery Words - Version 1.1 Click on letters in the 25 tile puzzle board to make valid English words while trying to figure out the mystery word to gain extra points. There are 1,000 mystery words in 14 different categories. One of the categories is questions which will give you more points for answering it correctly. Make words with the bonuses to gain extra points. Beware of the firecracker as you must make a word with it before it explodes or the game will be over.