This game is a single-player rogue-like card game. It's a kind of solitaire with 4 kinds of cards and dice.
The player acts as an adventurer who must pass through the dungeon, deal with the monsters guarding it, and fight the boss at the end.
The dungeon is a network of branching passages. The player chooses whether to go into the right or left passage - and, by that decision, chooses which of the next two monsters he will fight. The player also chooses whether the battle will occur physically or magically.
If the player wins a battle, he can choose one of the two treasures left after the battle.
When the player successfully passes through the dungeon, he gets to choose one new ability that improves his fighting skills. After that, he fights the dungeon boss.