1. I will post a 4 letter word, for example MILK.
2. Someone will post another 4 letter word, but may only do so by switching one letter, for example MILD.
3. The next word will be another 4 letter word but it will be based off the previous word, in this case MILD, and the new word could be a word such as WILD, and so on.
4. Continue doing this until there are no words that can be made or until a new round starts on the next day.
