2019-12-16:
Nomic
Nomic was invented in 1982 by philosopher Peter Suber. It's a game that starts with a given set of rules, but the players can change the rules over the course of the game, usually using some form of democratic voting. Some online variants exist, like Agora, which has been running since 1993.
Personally, I participated in Kamelopedia's Bürokratenspiel many years ago... ;-)