I'll start off with a 7 letter word, the next person will change one letter (make the changed letter different color) and make a new word.
Continuing from there, we keep changing one letter at a time to make a new word.
Example:
User 1 - markets
User 2 - warmest
User 3 - steamer
User 4 - matures
Starting word: Payload
Continuing from there, we keep changing one letter at a time to make a new word.
Example:
User 1 - markets
User 2 - warmest
User 3 - steamer
User 4 - matures
Starting word: Payload