EDD-202, short for "Extra Dungeon Difficulty 202," is a fan-made doujin game developed by the Japanese game developer, Yuji Ohashi. The game is part of the Touhou series and serves as a side story, taking place in an alternate universe. EDD-202 is a bullet hell shooter with a unique twist: it features a protagonist from the "other side" of the Touhou universe, Yua Sakuya.