Triple Tower Defense is a unique tower defense game with puzzle elements. Like other tower defense games, you have to stop enemies from moving from point A to point B. You have a few types of towers to do this, but the type of tower is automatically selected for you. When three or more of the same towers are placed adjacent to each other, they will combine into one stronger tower. You are shown the tower before you place it and can choose to discard it, but doing so will cost you points.