I vote for game controller. good idea.

How about a chess pawn wearing a wizard hat?

Something like a Shadowrun Decker comes to mind, but maybe thats just because i've been playing alot of shadowrun. >.>

Eitherway, the image of a guy with a cable pluged from his head into a keyboard seems like an appropriate symbol. Course, the idea of a chess symbol with a wizards hat seems kind of cute. ;)

Thanks for all your ideas. I think I will go with the game controller.
But the idea of the chess pawn also looks very good.

Feel free to past when you have more ideas.

race-car