Fantasy readers are leveling up. Welcome to LitRPG.

You couldn't walk very far at New York Comic Con this year without running into Dungeon Crawler Carl. The bestselling fantasy series was everywhere on the convention floor, from merch booths to an author signing with Matt Dinniman. Even I couldn't resist picking up a Princess Donut sticker. And while the premise of a man and his ex-girlfriend's cat fighting their way through an apocalyptic, video game-inspired dungeon created by aliens might sound absurd, its popularity points to something much