trickser wrote:Light-Pen comes to my mind, but disqualifies for being SciFi.
Ugh! waa?
I voted for Joypad, because it's the only controller I know that allows me to sit on a couch and make as little movement as possible (what can I say? I'm a lazy git). Also, I believe, it's possible to play and enjoy nearly all genre of games on a Joypad (yes, even top down RTS).
Touchscreen comes a close second, but I tend to get shoulder ache using my tablet for extended periods (from constantly leaning forward to peer into the small-ish screen), and it doesn't seem suited to all types of games (a tablet with a larger screen, and physical analogue controller would possibly remedy all that of course).
I feel a bit like a minotaur out of water here, but I've never really warmed to Keyboard and Mouse, even for everyday computing tasks. But to paraphrase Winston Churchill "It's the worst solution to the problem, apart from all the other solutions".
I hope to be able to use controller-less motion controls in the future (for when arthritis turns my fingers into talons), as long as they don't try and force me into keeping fit, or waving my arms around like a lunatic.