The Ergonomics of Controllers
Rahul Choudhury writes "Over the years, the controller device we use as our extra limb into the world of gaming has evolved from joystick to d-pad, analogue control, and touchscreen. Gamingredients investigated the pros and cons of a variety of controllers from Colecovision to Xbox (and expressed their scores in flavours of coffee)."
This site shows a speculated tree of evolution of game controllers.
It is indeed evolutionary, with each generation resembling the previous one, but a bit different.
^_^
Well, in Legend of Zelda: Ocarina of Time, there was something called the stone of agony that would make the rumble pak vibrate if you were walking near a secret.
None of those are genuine cross shaped controllers. They all implement a variation of the cross d-pad that is different enough to prevent them getting sued. That's why the PS1/2 is a segmented design, and why Sega use one based on a circular pad with a cross on top.
I believe it is the specific cross shape that Nintendo owns the patent to, rather than any underlying electronic design.
The patent expired before the Dreamcast came out. If Sony wanted to they could make a non-broken up controller now.
Why not fork?