In the Dungeons & Dragons (D&D) fantasy role-playing game, dragons are an iconic type of monstrous creature. As a group, D&D dragons are loosely based upon dragons from a wide range of fictional and mythological sources. Dungeons & Dragons allows players to fight its fictional dragons and "slay their psychic dragons" as well. These dragons, specifically their "dungeon ecology," have implications for the literary theory of fantasy writing. D&D dragons also featured as targets of the moral panic surrounding the game.