Awesome game, 5/5. Although if you know the trick to those Magic Eye books and use it in this type of game, it makes even hard mode a walk in the park.
I spent about ten minutes flying around thinking the whole point of the game was to just run into the cigarettes before I realized I could shoot at them...
 "Moonlight Differences"){kind=icon}
 "Cigarette Killer!"){kind=icon}