Afraid to say, you'd be much better off looking at AGK.
Side scrolling platform games tend to do pretty well om mobile platforms as long as they have some USP - like The Other Brothers, Giana Sisters, Mikey Shorts etc etc. AppGameKit is more relevant these days for these sorts of games. I just don't think you'll find anything too impressive by todays standards - there's probably a good few platformers made in DB, but I doubt anyone is selling them. I mean - DB doesn't even support alpha transparency, so any 2D platformer is gonna struggle to look decent by todays standards.
Really, I think you'd have more fun, better results, and a much easier time by checking out AppGameKit instead... It has Box2D, great support for animated sprites, particles etc etc, it's multi-platform - it's really the next stage in evolution for DB, so much so that DB is pretty much redundant for making 2D games.
I got a fever, and the only prescription, is more memes.
