You have put on a helmet when you play this cube stacking physics challenge! Your mission is to balance the blocks and build your tower as high as it can go without letting it fall over. If you really want to reach a record level height, you will need to build out as well as up. Balance the platform with equal weight left and right to make the sky the limit as you build higher and higher. But watch out; everything can come crashing down in a moment and destroy the perfect tower.