The game is divided into six rounds. On their turn each player must:

1. Mine a crystal: The player draws a crystal from the bag and places it on his cart. If the mined crystal is an unstable (black) crystal, the player receives a reroll marker. There is no limit to the number of reroll markers a player can have.

2. Roll the dice: Each player has up to three dice rolls per turn. In the first, all 5 dice must be rolled. In the second and third they can reroll as many dice as they want. If they have a reroll marker, the player can discard it to perform an extra reroll.

3. Perform actions: According to the result of the dice, the player will be able to perform one or more actions. Aside from the pickaxe symbol there must be at least a pair of dice for the action to be effective. More dice faces of the same kind can make the action more effective. Actions allow the player to mine more crystals, steal crystals, store crystals in the chest, or transfer unstable crystals to opponents.

Scoring

At the end of the game, everyone receives points according to the value of the crystals they have, 2/3/4/5/7/9 points each according to the chart on the mine cart.

Bonus points are awarded for collections of crystals of the same colour:

• 3 identical Crystals = +3 Points
• 4 identical Crystals = +6 Points
• 5 identical Crystals = +10 Points

Scoring Penalties

• Unstable Crystals = -3 points each
• Player with fewest Crystals in their chest = -5 points (In case of a tie, all tied players lose 5 points.)

The player with the most points after 6 rounds wins.