On The Underground: Obstruction1 5 players A new promo for both On The Underground games. Setup: Before setting up the game, randomly draw three destination cards and place an obstruction tile in each of the stations they show. Shuffle those cards back into the deck. Gameplay: A player must pay 2 branch tiles to connect a line to a station with an obstruction tile. That player then scores three points and removes the obstruction tile from the game. Boardgamegeek