Improv exercise: rule trees

(A game properties improv exercise adapted from Salen Tekinbaş & Zimmerman (2004))

Rule Trees - a collaborative exercise for creating linked and branching rule sets. 

1. First person writes 2 game rule statements. The first rule is covered.
2. Only reveal the last (new) rule to the next person.
3. Second person writes 2 additional game rule statements based on viewing the last rule (above), 
4. Only reveal the last (new) rule to the next person.
5. Third person writes 2 additional game rule statements based on viewing the last rule (above), 
6. Only reveal the last (new) rule to the next person.
7. <repeat>
8. The last person adds a win condition.
9. The group reviews the 'rules and win' and fashions a game from them.

References:

Salen, K., Tekinbaş, K.S. and Zimmerman, E., 2004. Rules of play: Game design fundamentals. MIT press.