Carnac is a simple fast abstract strategy game for two players. On your turn, you take a Megalith — a piece formed by two cubes joined together — from the common reserve, and place it on the board in a standing position. The turn passes to your opponent if he is willing to tip over the Megalith or if the Megalith cannot be tipped over.
A player owns a square if it is covered by a Megalith showing his color on the upper face. A Dolmen is a group of at least three adjacent squares belonging to the same player. The game is won by the player with the most Dolmens