Pluto knew he had respect. He had his own planet! High praise! But when the Earthlings removed decided to recategorize his planet, he was angry. There was simply no sufficient reason to remove this accolade. Vengeance would be his.
For a while, Pluto considered his options. Then he got angry.
He called a violent neighboring alien civilization, who he had kept at bay from the Solar System with a planet bearing his name. He opened a wormhole and invited them to invade our system.
It is up to you to eliminate the alien threat. There is only one thing that stands between us and destruction: you.
Tap on the left half of the screen to move the ship clockwise. Tap on the right half of the screen to move the ship counter-clockwise. Tap on the fire button to shoot a proton missile at an alien, and if you have lost control, tap on the bomb button to eliminate all the aliens currently in the wormhole. Bombs are of limited supply, so dont be so eager to use them.
There are 4 plus-ups. The first is a bomb. Again, bombs are in limited in number, but you can replenish your supply with the bomb plus-up. Next is a subspace time inhibitor which slows the movement of the aliens in the wormhole. The third is an auto-fire feature that shoots missiles for you. Finally, you may acquire a second ship for a limited time to help you. It will fire at the same time you fire, and it will be on the side of the wormhole opposite your current location.
You must shoot the plus-ups. If the plus-ups reach the edge of the wormhole, they are destroyed.
If an alien reaches the edge of the wormhole, we are destroyed. We are counting on you!
The first few moments of the invasion should be reasonably slow, enabling you to get your bearings and learn how to operate your ship in combat. We expect the invasion to increase in difficulty rather quickly.
Good luck!