We all want to save the planet, because that's what Madonna does, and we want to do everything Madonna does, even marrying rubbish mockneys and getting our arms all veiny.

However, Madonna's never tried saving the planet by firing cannons at aliens, so at least you have that much on her. That's what you do in Save The Planet, see – shoot aliens with a cannon strapped to the top of a planet. But the cannonballs you fire all feel the effects of gravity, from the aliens and the planet. Miss an alien with a shot and the cannon ball will crash back to Earth. It makes for some quick thinking, we don't mind telling you.

Play Save The Planet now