Nomic is a game created in 1982 by philosopher Peter Suber in which the rules of the game include mechanisms for the players to change those rules, usually beginning through a system of democratic voting.

... rules are divided into two types: mutable and immutable. The main difference between these is that immutable rules must be changed into mutable rules (called transmuting) before they can be modified or removed. Immutable rules also take precedence over mutable ones. A rule change may be:

    the addition of a new mutable rule
    an amendment to a mutable rule
    the repeal of a mutable rule
    the transmutation of a rule from mutable to immutable
    or the transmutation of a rule from immutable to mutable