Adds five unique pieces of terrain that can radically alter the developmental space of the game's board. Choose 1-3 Obstacles depending the number of the players before the game begins and place them as you want on the board, inside the playing area. The Obstacles limit the space you have to build and make the game more difficult, as each piece will come with its own rule modifications. You must be more careful how you will build your Block since your opponents will try to find a way and stop you from growing your Block!