Stack the bottle tops high and wide without allowing them to fall! Build to 9 levels for a good challenge. Fewer levels is even tougher. If you used all tops and not made it crash you've mastered the game. Decide how many levels you will stack and pick a player to go first. Play passes to the left. When you reached the agreed number of levels cap off the stack by placing the red bottle top in the centre. From now on you must build down and out! Continue taking turns and try to expanding the stack wider and wider. If you make 1 to 5 other tops fall from the stack, you must put back double the number of tops you made fall. Two player or multi-player, difficulty level: hard. Set contains a wooden bottle + cap, wooden tops and one red bottle top.