The image isn't really 3d the your brain is interpreting the change as motion and is then creating the 3 dimentionality from that. If you speed it up to reduce the flicker it's not longer seen as motion so no 3d either. I think the image is tuned to about the optimal speed for the 3d effect. As for gaming, in theory you could get the computer to do this. It's the same as 3D glasses, only without the glasses control and a LOT slower. Very likely to give you a headache though!