Then came Dungeon Crawler Carl, Matt Dinniman’s wildly inventive series that, more than becoming another fantasy bestseller, turned into a genuine gateway. MATT DINNIMAN (author, Dungeon Crawler Carl): “LitRPG stands for Literary Role-Playing Game. Author Matt Dinniman and Dungeon Crawler Carl cover L-R: Getty Images, Ace BooksBRIAN BELL (host, ‘BellTube’): “No LitRPG, no cultivation story, no progression story is any good without interesting characters and an interesting story. Take Dungeon Crawler Carl, the series that has become LitRPG’s biggest ambassador. MATT DINNIMAN: “A lot of my fans of Dungeon Crawler Carl aren’t new readers.