You have to swipe your finger on the screen to roll and touch on the screen to drop the ball on the balance.
Each ball has a set weight so you have to be careful when let its drop.
The balls will affect the balance according to their distance from the fulcrum.
The key is you have to match three or more balls of the same color vertically to make them disappear and release the balance.
If the edge of the balance hit the ground, the game is over.
So, why dont you try this game and share with us you feeling?