I've been thinking about trying to add a spinner or two to my cp, but I didn't leave enough room yet for the second one. I mainly want two spinners so that we can play two-player Ikari Warriors using a combo of topfire joysticks and spinners.
Maybe you can adjust the sensitivity or something, but playing Ikari Warriors with a spinner is brutal. I don't like it at all.
Ah, I was afraid of that. I'm adding at least one spinner to my cp anyways, so I'll definitely test before adding a second one.
Sorry, I don't know how many games use two spinners. All I remember playing was Tempest, Tron, Breakout (w/ Atari paddles), and Arkanoid. None of those had two spinners.
Edit: forgot, many driving games could be played with a Spinner, so Sprint, etc. ...