Players explore caverns and mine the mystical gems contained within. Nodes within the caverns contain a supply of each of the 3 types of gems: Red, Blue, and Yellow. Players can only mine each node once and the color they choose is then unavailable to the other players for that node. The gems are used to perform the three actions in the game: Red - mine, Blue - refill movement points, Yellow - reveal a new cavern. The game ends when a player reaches the master chamber (center) and then exits the mine. Scoring consists of multiplying your least common gems by 3 and then adding that to your most common gems.