How the holographic gaming rig Valve didn't want aims to conquer the virtual world

When Jeri Ellsworth and Rick Johnson parted ways with Valve last February, they took away the thingamajig they'd spent the previous year developing. And now it's got a Kickstarter.

CastAR is a 3D holograph-style game display that runs through a pair of glasses. In the shorthand blurb of the gadget's Kickstarter, it's basically like that "let the Wookie win" scene in which R2-D2 and Chewbacca play a chess-style game.

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