Use the left and right arrows to move the UFO. When you are above a target, press [space] to activate the tractor beam and abduct. But be careful! Birds and sharks will lower your score!
Now with three levels and obstacles! Level changes when score reaches 10. Octopus shows up in the third level if the score is below -5 and is worth 8 points. I am currently working on version 3 that changes levels on a timer. Music is "Haunted Keyboard" by Simon Mathewson, distributed under a Creative Commons Attribution-NonCommercial-ShareAlike license. It is available at http://freemusicarchive.org/.