Balls are attrackted from the middle. This will cause a bundle of balls where you have to remove the groups.
Remove all balls from your screen to climb to the next level.
Higher level = more points per ball
Bigger groups of balls = more points per ball
If they are spinning to slowly try the "Speed Up" button
Increased FPS
Chains can split
shooted balls limited per level
Maximum three reward videos
Levels are harder