Dungeon Maker: Hunting Ground is an action RPG where the player creates their own unique dungeon using purchased pre-crafted pieces. Each day, as the player adds to his dungeon, wandering monsters come to inhabit it. The deeper the player builds his dungeon, the more deadly the monsters and their treasures. A deep and well-crafted dungeon might attract the ultimate evil creature for you to try and defeat using a variety of items, weapons, and spells that have been acquired along the way. The nearby city offers equipment, food, quests, and quirky characters to aid you in your adventure.

In an effort to protect a small town from attacks by monsters and demons, a novice "dungeon maker" has decided to create a dungeon in a nearby cave in order to lure the monsters away from the town itself. Conceptually, the hope is that such creatures will find the dungeon appealing and hence settle there, rather than roaming about. The dungeon architect can then venture into the dungeon and exterminate them.

As the dungeon grows larger and deeper, more powerful foes are expected to take up residence. Ultimately, the dungeon maker (played by the player) intends to attract a legendary foe, the "Wandering Demon", whose defeat will hopefully lead to long-term peace for the region.