At first I didn't understand what to do, but after some trial and error I got it. Would have been nice to have some kind of tutorial.
It's a fun game! The controls feel great and fun to play with. But the game becomes extremely hard super fast because if the red spheres steal the points from you, there's nothing you can do. I wanted to play more cause it's super fun, but sadly couldn't get past the second level because of this.