They are cheap recreational entertainment .
You don't need to buy batteries or lug around heavy gadgets to be able to play some puzzles. All you need is the paper or book they are printed on plus a pen or a pencil and you are all set. You can also turn on your computer and play all the puzzles you can avail of online.
These games help you practice your spelling
Getting the right answer to a clue provided on a crossword takes skill in spelling a word right. Just one wrong spelling can already compromise the answers of the other clues in the game.
They help enhance your vocabulary.
It is fun to learn new words and you can do exactly that from answering such games as crosswords, codewords or word searches.