Essentially a board game version of "Paper-Scissors-Rock," Casting Stones uses a "Spells-Potions-Charms" hierarchy for competition between players. Players "cast" by rolling their allotted five coin-like "Casting Stones" to generate Spells, Potions or Charms, depending on which way the stones land. The object is to beat your opponent's roll and end up putting a "Gem" on one of the game board "Turrets." The first person to place four Gems on four consecutive Turrets wins. The game can become interesting when certain casting situations allow one player to knock another's Gems off the Turrets, thereby setting the opponent back a step. Players can up the level of gaming complexity in the "Intermediate Game" by adding the two "Casting Cards" into game play. These are included with the Starter Set and enhance the effect of Spells, Potions and Charms. The "Advanced Game" adds more options and strategies to game play, yet requires separate purchases of additional Casting Stones and Casting Cards sold in "Refill Sets."