If you take your gaming seriously, chances are you've tried at least one of those 3D-goggle or headset products that promise to put you inside the game. I have, and though I've been impressed by the 3D performance from products such as eMagin's Z800 3D Visor, a 30-minute session had me feeling as if I had just taken a few swigs from a bottle of cheap tequila: My head hurt, my vision was blurred, and nausea was beginning to take hold. The iZ3D display from Neurok Optics takes a somewhat different approach to extra-dimensional gaming, delivering sharp 3D images without the heavy headgear or unpleasant side effects. But its $1,299 (direct) price tag might keep you awake at night.