Ok, I HAD to try this out. I downloaded the app from the link provided (thanks, scmok!) and installed it. First of all, I have to say that I was a little disappointed that the whistling guy wasn't present.
After playing with it for several minutes, I discovered that my previous attempts to whistle "The Flight of the Bumblebee" resulted in my getting killed with alarming frequency. I also couldn't shoot anything. I found that whistling distinct notes rather slowly had the best effect. High notes move the ship to the right, and low ones move it to the left.
To fire, select "Options" at the bottom, and then select "Auto Fire". This is a pretty cool feature, as it allows you to continuously fire for as long as you can hold a note. I was able to kill most of the invaders of the first level in this fashion, but I felt as though I had just blown up about 50 balloons. Smokers, this game is not for you. :wink:
While this is a fairly fun game, I did find that it was susceptible to outside influences. Namely, my wife was annoyed at all of the infernal whistling coming from the office. I explained what I was doing, and she proceeded to screw up my games by whistling at inopportune moments. Thanks, honey. :mrgreen:
In short, check it out, if only for the novelty value.