Sock Master's Game Console Controller Family Tree offers an interesting classification of game controllers based on a family tree:

How did the current home-console controllers come to be? How have they evolved? You may have noticed some similarities between the current generation controllers, or between them and the previous generations of controllers. So, how do they all tie together?

Why do I blog this? it's interesting to analyse design in terms of family tree and potential proximity between old and brand-new artifacts. This longitudinal view however shows an important stability of game controllers. Of course, some are missing.