Droom
Droom: Created by Nick D'Andrea
Description Edit
Droom is an open, explorative game creation ruleset. It has things in common with Zendo and Nomic, and probably shouldn't be attempted by novices. That said, I imagine that it is something that could be a lot of fun for thoughtful ludic gamers. Each player makes a game and plays out the game by rules of their own making--thus only knowing the winning condition for their own ruleset.
External Link Edit
The archived "rules" are available here. here.