Here's an article with lots of interesting background info from the same author (lessmilk), "What I learned while doing my 'one game per week' challenge":

http://gamasutra.com/blogs/ThomasPalef/20140225/211663/What_...

Worth it especially for the following superb link:

http://www.gamasutra.com/view/feature/130848/how_to_prototyp...