You're an explorer in the jungle and stumble upon a mysterious entrance. You decide to enter and discover a peculiar dungeon where ancient creatures battle for precious treasures. You wonder how the creatures have survived here for so long, but you also feel drawn to the treasures within. A strange feeling tells you that you must join the fight for the treasures, even though you don't know if you'll ever be able to leave the dungeon.

In Mini Dungeon, you and your opponent create a 4x4 grid of adventurer cards, trying to win the treasures adjacent to the grid. You do this by ensuring you have the adventurer with the highest power in each row and column. You also have to consider the abilities of the different adventurers. Once the grid is completely filled, you decide who wins the treasures in each row and column. The player with the most coins on treasure cards wins the game!