Grab a block from anywhere under the last completed row and then put it on the top - that's it! The longer you play the harder it'll be as the tower becomes more and more unstable, however, you'll also unlock stuff faster. Good luck!

Grab a block from anywhere under the last completed row and then put it on the top - that's it! The longer you play the harder it'll be as the tower becomes more and more unstable, however, you'll also unlock stuff faster. Good luck!