This is based on the TV show Chain Reaction... for those of you who haven't seen it, the forum version will work like this: P1 says a word. P2 then has to say a word that makes sense with the previous word. P3 then has to say a word that makes sense with P2's word.
Here's an example (From the Chain Reaction theme song):
P1:Word
P2:Game
P3:Ball
P4:Room
P5:Key
P6:Chain
P7:Reaction
So the phrases are "word game," "game ball," "ballroom," "room key," "key chain," "Chain reaction"
So think of it this way:
P1:Word
P2:Game
P3:Ball
P4:Room
P5:Key
P6:Chain
P7:Reaction
Phrases can consist of one word (ballroom), two words (game ball), or two words seperated with a hyphen. However, you cannot use the previous word as a verb, only an adjective or part of a noun. (ie no "burn it" type things) I'll go first: