Acrobats

From BoardGameGeek:

There's something going on in the bat tower! If you're ready to test your skill as an Acrobat, here's how it's done: To start, place the magnetic bat on the top of the Bat Tower. Roll the bat die to see what color bat you have to add on your turn. You may be lucky and have to place a small one or not so lucky and have to place the biggest one of all. As each player goes, the weight of all those bats begins to tug on the top one so, be careful! If your bat is the one that makes them fall, you get a Bat Token. When a player has 3 Bat Tokens they're out of the game and the player who has the fewest at that time wins!