When Dungeon World was released in 2012, it slammed the door to Powered by the Apocalypse open so hard it broke the hinges. By taking the recipe crafted in the Baker House and mating it to the memetic power of Dungeons and Dragons, suddenly everyone could see what was so powerful about PbtA. Of course, Dungeon World was hardly a perfect recipe. Using the architecture of ‘moves’ established in PbtA but keeping both the stats and classes of D&D made for an incomplete match, and some of the mechanical choices made to get the two to pair up have received more significant criticism now that the design community has had a good decade and a half to really figure out what PbtA is. Still, the combination of a solid foundation and a lot of good ideas made Dungeon World into a rare specimen: The commercially successful fantasy heartbreaker.