You have to keep the balance by tilting the phone logs that have not fallen for some time it may be 5 seconds , maybe 15 seconds .
The game is done in 2D, that would unlock the next level enough to hold one star, but that would open the next level you have to keep at three stars. Only time level you go Ladder total time . All in the game 72 levels . It seems easy ? ! Try it!

https://www.youtube.com/channel/UCfuEh5bTsMHSnhhtFcpkRTw

https://play.google.com/store/apps/details?id=com.balance2D.twobeards