right well its simple really, all you have to do is stack the blocks so they don't fall, its all pretyy easy really intil you reach level 21 that's when it gets super hard !
omfg...i dont noe how i did it but i actually beat it...i looked at this question then i tried it... u start at the bottom with three squares then just stak em to the top!!
You just keep dropping it in certain positions until it stays upright and still ant the bottom! I also found i really hard when i first did it but you have just got tokeep trying. Hope i helped!