Over the years, I've met lots of GMs who've created and lovingly detailed their own campaign settings, most often for D&D. These settings are usually extensively developed, complete with maps, country write-ups, elaborate histories -- the whole nine yards. But as much as enjoy writing setting material, I've never actually done this myself. I've dabbled -- drawn detailed maps for fantasy worlds, written chunks of material for specific cities, ...

Fang asks, What Makes the Perfect Gamemaster?. It is having fascinating world, scenarios and characters? Being able improvise, but not railroad? Perhaps if one lets players act whenever / however they like? I’m a big proponent for keeps things moving; is that it? Maybe a perfect gamemaster can handle a split party with perfectly equal spotlight time? Memorizes all the rules? Is fair to the players but not ...