Players: Two or more
Players alternate in adding a letter to a word, to make an anagram of a new word.
The first player starts with a three-letter word. The next player tries to find a four-letter word by adding a letter and making an anagram of all the letters.
The players continue in this way, making longer and longer anagrams. The first player unable to make a word loses.
For example, the first player could start with:
The other player could then add a K to make:
Play might continue as follows:
Finally the second player makes:
The first player cannot make another word, so the second player wins.
Of the 600 common three-letter words, only "fix" and "ivy" cannot be extended to four letters, so it's a good idea to ban these as starting words.