Double Dungeons TurboGrafx-16 Game.
Double Dungeons is a barebones RPG in which one or two players battle ghouls, blobs of green slime, hawks, and other creatures while exploring 22 different mazes. Each maze (but the last) is selected at the beginning of the game, but a key must be found in each level to access each boss. Thorough exploration equals a gain in experience points, which in turn leads to the earning of hit points and gold. Players start off armed with a dagger and a simple shield, but can upgrade their character by purchasing armor, healing potions, swords, and other items in various shops.