Before revision: ARGs are typically moderated by the game designers (known as puppet masters) -- who remain unseen throughout the narrative but act "simultaneously [as] allies and adversaries to the player base, creating obstacles and providing resources for overcoming them in the course of telling the game's URL story."
After revision: ARGs are typically moderated by the game designers (known as puppet masters) -- who remain unseen throughout the narrative but act "simultaneously [as] allies and adversaries to the player base, creating obstacles and providing resources for overcoming them in the course of telling the game's story."