How fast can you think?
Tap on the balls to destroy them before they hit the bottom, add up to it and shrink your space.
Be aware of number 7!
Let all numbers divisible by 7 or containing 7 hit the bottom and help you destroy it. Be careful though as those can be dangerous too - destroy 3 of them and game is over!
Have fun!!!
PS: On every lost level a fullscreen ad will pop-up.