According to Evan Ackerman, “once you’ve tried the Falcon, pretty much any other FPS controller seems tame by comparison.” Video after the break. Click here for one more picture. Here’s how it works:

The grip is attached to the controller through three arms which provide no noticeable resistance in normal use. You use the pistol grip just like a mouse, pointing it in different directions to look around as you navigate with the keyboard

[via OhGizmo]