I recently read the following article: http://quote-un-quote.tumblr.com/post/3390170258/interview-indiedev-lazybraingames Inside the interview, the developer says that rapid prototyping is a good way to gain exposure and coverage. I do think that it is a good idea to release often but I don't believe that rapid prototyping will solve a developer's problem with not being able to finish things. Maybe if the developer is inexperienced, but otherwise if won't do he/she much good.