Valve has posted a video demonstration of their Steam Controller prototype. I have to say that I am pretty impressed with the level of accuracy that is shown. It looks like something that could get pretty close to mouse level accuracy with practice.
Here’s a quick look at some games being played with the prototype version of the Steam Controller — the same version that we’ll be shipping to 300 Steam users later this year. We’ll post more demonstrations like this soon, including footage of some other game developers using the controller to play their own games.