All mining dwarves in their early childhood already attended the greatest institution of teaching of mining techniques in the kingdom. Hands-on activities are part of the day-to-day lessons at the school, where young dwarves learn to distinguish precious crystals from worthless stones. The kid who gets the best set of crystal will receive the much-desired best student medal! Starting with the youngest player and going clockwise, each player will explore the mine until they decide to leave and end their workday. When exploring the mine, the player draws a stone from the bag. Colored stones can be turned into medals. Two gray stones cause an accident that ends the workday. Ending the turn without having an accident grants the player two bonus medals. After everyone has explored the mine for three rounds, the game ends and players line up their acquired medals next to each other on the table. Whoever has the longest line of medals will be the winner.