The Tower

Instead of placing a meeple, you may add one of your tower floors to any tower foundation or open tower, then you may capture one meeple (anyone's; your own just goes back to your supply). The tower reaches its own tile plus as many tiles in each straight direction as it is tall, over gaps and other towers. Placing a meeple on top of a tower closes it. Prisoners are swapped at once when two players hold each other's; otherwise, on your turn, you may buy one back by paying its captor 3 points, and use it that turn.