Let's play chain reaction! like the gameshow, say a word, and next user says it in another form. EXAMPLE:
User 1: Base Ball
User 2: Ball Hog
User 3: Hog Warts
this keeps going and going for a long chain reaction!
Note: if word is impossible to use, make a note of it and start a new one, or wait for someone else to answer it.
LET'S PLAY CHAIN REACTION!
I'll start... Key chain