Nomic, A Game of Self-Amendment - http://www.earlham.edu/~peters/nomic.htm (which includes many links to instances on the web)
It's a game in which changing the rules is a move. The Initial Set of rules does little more than regulate the rule-changing process. While most of its initial rules are procedural in this sense, it does have one substantive rule (on how to earn points toward winning); but this rule is deliberately boring so that players will quickly amend it to please themselves.
Nomic has been used to stimulate artistic creativity, simulate the circulation of money, structure group therapy sessions, train managers, and to teach public speaking, legal reasoning, and legislative drafting. Nomic games have sent ambassadors to other Nomic games, formed federations, and played Meta-Nomic. Nomic games have experienced revolution, oppressive coups, and the restoration of popular sovereignty.
- annotated history
Related distantly to Glass-Bead Game? http://www.ludism.org/gbgwiki/KennexionsIntroduction