There are three levels to the mini-game: Beginner, Intermediate, and Expert. The level of difficulty influences the cost, the size, and the amount of traps within the game.
The Beginner difficulty costs 30 Rupees to play, and consists of twenty spaces in a 5x4 grid. Of these spots, four are bombs. The grid is guaranteed to hold a number of both Green and Blue Rupees, with a small chance of a Red Rupee.
The Intermediate difficulty costs 50 Rupees to play, and consists of thirty spots in a 6x5 grid. Of these spots, four are Rupoors and four are bombs. The grid contains mostly Blue and Red Rupees, while Green and Silver Rupees are fairly rare.
The Expert difficulty costs 70 Rupees to play, and consists of forty spots in an 8x5 grid. Of these spots, eight are Rupoors and eight are bombs. Most spots contain Red Rupees, and occasional sightings of Blue, Silver, and Gold Rupees have been observed.