Woke up in one quiet morning in New York City, the Big Apple, USA. Suddenly the silence was broken by loud droning sounds from above.

Out from the sky came a swarm of flying saucers, UFOs, circling down on the City.
Help! We are being invaded by aliens from the outerspace!

New York has fallen! Or is it?

Yes, it will be if you do nothing! Grab a gun and start shooting these spaceships if you wish to stop the invasion by the aliens!