Triology shares the same rule of logic as the world famous visualization game Set. Triology draws on both ways of thinking--serial/logical/left brain and parallel/right brain--as each player determines what Sets to make from the cards in their hand and when to play them. Strategy plays a vital part in winning. While cards put down in Sets count for you, they can be stolen. If held in your hand the cards can be used to steal other players points, but they will count against you if someone goes out.