Since the topic was already necroed: I haven't noticed anyone mentioning Matt Dabrowski's Streets of Rogue. Apart from some freelancers hired to provide the music and most of the art, I think everything else (at least design and programming) was done by him. Not sure if any additional core developers were hired for work on the sequel, but my impression is that it's still mostly just him, with some freelancers once again doing the music & art.