Coins in denominations of several cents are suspended in the air. Your task is to knock down so many coins that their amount is at least one dollar. To knock down coins, use a crystal that is launched into flight by a hammer blow. Wait for the moment when the crystal takes the right position, and make a hit.
On the computer: To make a hammer blow, click with the left mouse button (the cursor should be in the game window). On a mobile device: To make a hammer blow, touch the screen.