Why are “rules for rules” important, especially for RPGs? Because it enables greater player agency in the game. A card game like “War” has rules, but there are no decisions to be made, so it’s just taking the player along for a ride. “Monopoly” lets the player make a few decisions, but there’s so much randomness that agency is almost nullified. You buy and improve the best property you can afford as soon as possible, because to do otherwise is to lose money in the long term.