Canabalt Faved
Highly addictive and a great waist of time.
I will admit that I'd love to see some sort of story, maybe a tie-in with an animation or something. The Attackers of the city have really peaked my interest. Aliens? Government? Maybe a superior race or more advance intelligence like A.I. that runs the world? It's got a lot of potential for a cool cross-over event on Newgrounds!
But the point is that it's a great game for such short work. keep it up.
Manhattan Project 
