Press, pull, release. The longer you hold the bigger the ball is. The goal is to throw blocks off the stage.
Hit the spacebar to cancel the shot.
Caution, each second you charge the ball it will cost you a point.
You get points for green blocks. You lose points for red blocks.
You can always restart your current level, but this will cost you points.
There are stone, ice, and rubber platforms. These all act differently, experiment to find out.
Anyone else playing on a laptop and finding themselves tipping their screen to the side?