Playing with another rulebook?
I've had this idea buzzing around in my head for a while, and I want to see what you guys think.
Imagine you brought out a D&D and set everything up, but just before you begin playing, the DM throws out the rulebook and pulls out the Burning Wheel's rulebook, and you started playing by that game's rules instead. Could it actually work? If so, can it work for other game combinations?