The aliens are here in vast inter galactic mining ships to "EAT" our solar system. They are after resources :- base metals, heavy gases, complex carbons, liquid hydrogen, etc. In fact exactly the sort of stuff that the planets in our solar system are made of!

You must defend each planet in turn. Don't let the aliens land 3 ships on a planet, that's all they need to set up a focused singularity point explosion to blow the planet into obliteration and harvest the lumps.

You have a high powered dark matter laser in low orbit, just tap on the screen to aim and shoot the invaders. Unfortunately the laser only works in space so cannot be used to kill any invaders that have already landed, if three ships make it to the surface its bye bye planet and game over!