Artificial intelligence now allows digital worlds to react and adapt and rewrite their own scripts in real time based on audience behavior. Building the Massive Interactive SetHandling multiplayer environments requires invisible infrastructure that acts like a massive stage crew working tirelessly behind the scenes. This approach allows smaller independent development teams to launch massive worlds that rival the output of legacy corporate studios. Human moderators simply cannot monitor every conversation happening within a massive digital city. We will soon see virtual worlds that adapt their fundamental rules and mechanics based on community feedback.