I must admit I do not have a lot of experience with “No Rule” systems of LRP except for widegames and such. Just a few random thoughts that will probably be totally wrong and show my misunderstanding of the concepts involved.
All human life is governed by rules. To quote, “Man is born in freedom but he soon becomes a slave, in cages of convention from the cradle to the grave.” Whether these be laws of the land or laws of physics. Laws of the land include such basic things such as though shalt not kill, laws of physics are thou shalt not fly under your own power. Most LARP rules are to overcome these limitations. When done well the rules and system should be almost transparent.
For example, we belive that skills fall into several basic catergories, action skills,knowledge skills and interaction skills.
Action skills often just allow you to do something in the game, i.e., disarm traps lets you physically disarm a trap, if you do not have this skill then it automatically fires when you try, Light Weapons allows you to fight with a dagger. These skills should as much as possible be physically carried out. Magic skills present a real problem in this area, but you just got to pay the piper. Combat skills should always be action skills.
Knowledge skills are useful for getting information to a player that the Writer thinks is vital to the module and represents the many years of knowledge that a character has of living in the world. Sometimes it’s as obtrusive as “Monster Lore : what the hell are you?”, “I’m an Ogre”, but most of the time it is fairly invisible. even the monster lore thing seems to take a few seconds to play and nobody seems to care about doing it while they are fighting for their lives.
Interaction Skills allow players to interact, funny that. In LRP as in reality characters will have different ideas about what should happen, i.e. the vampire thinks you would make a nice tasty snack, but you think the vampire would make a nice trophy. This has to be resolved somehow. In modern society this is meant to be the courts, but we are trying to escape that world so we need another system. This is really the bit I can’t figure out for a “No Rules” system. Does this mean no bribery, torture, combat? Or do you really do it and say to hell with the inevitable deaths. Sounds a great system for sociopaths.
Any game system needs to be as close to as invisible as possible, however when you are running a fantasy system like us you have to accept there will be rules to allow people to do things they normally would not or could not. You also have to accept that 10% of your players are going to be rules lawyers, up to 20% are going to be power gamers, 5% are going to be be behinders, 10% cheats, up to 25% screaming me me’s and so on.