Space Fall - M
iOS Universal Games
By shooting the planet, you can split it in two.
Then split one of those in two, again.
Over and over until there is nothing left.
In the future, there was a war that destroys almost entire earth. But people still fight each other. So the peaceful-mind-people decide to leave the earth and find another. In the hidden dimension, they found a secret marble that turns into two marbles when its broken. The marble represents a planet on universe which they can warp into. Now, the people in the spaceship starts breaking the marbles until they find another earth.
It got easier!