Games Like Ballistic M.A.D.ness

Ballistic M.A.D.ness is a casual aiming game with some strategy aspects. The goal of the game is to accumulate as many points as possible by blasting your enemies with thermonuclear warheads.
You shoot these warheads with a REALLY big gun: It is capable of blasting shells all the way to the other side of the planet!
And this is where it gets difficult, you need to set the gun to the correct heading, azimuth, and load it with the right amount of gunpowder such that your shells land on the targets.
As you progress in levels, the difficulty will increase, and the planets that you battle over will change in size and gravity which will affect the trajectory of your shells.