from the introduction:
These are a set of very simple dungeon-bashing rules for youngsters and the young at heart. This is classic kick-in-the-door, kill the monsters and steal their treasure stuff.
One player is the Overfiend. He creates the layout of his dungeon, populates it with monsters and treasure and then runs the game. The other players, best between three and five, must guide their Dungeoneers through the dungeon hopefully to emerge victorious, alive and laden down with treasure at the end.