Double Dungeons is a dungeon role-playing game. Two players can play at the same time. There are 22 unique scenarios, spread out among six levels. The higher the level is, the harder the scenario. Because each scenario is independent, players can choose to start the game from any scenario other than the final one. Players defeat monsters in each dungeon to gain experience while searching for the "key" that opens the door to the room with the boss. They buy equipment at the shop, team up with characters and defeat the boss to clear a scenario. Players must conquer all 21 scenarios from levels 1 through 5 to obtain passwords. If they obtain all of them, they make their way to the final scenario.