Includes 3 green and 3 yellow cardboards (tiles). Instructions: Before the game begins, divide the construction cardboards into 2 groups: green and yellow. Place them face up next to the game board. All players can use these cardboards, but only during the construction phase. To use such a cardboard, you must buy it with victory points. Green costs 1 victory point and yellow costs 2 victory points. This was a KS exclusive which came packaged separately from the expansion box.