In Dungeon Scrawlers: Heroes of Undermountain, players dive into Undermountain, an immense underground of dungeons created by the Mad Mage, Halaster Blackcloak, using dry erase markers to trace their path. They start by choosing one of five character with unique abilities to help them collect points faster. Then, players delve into the dungeon to defeat Monsters, fight Bosses, connect Artifact Fragments, and collect Treasure in an effort to gain more points than their comrades. The player with the most points after exploring three dungeons wins the game.