Our inborn 3D view of the world, created when the brain combines two images (one from each eye), helps a great deal when we're catching a baseball, avoiding a herd of stampeding water buffalo, and (best of all) playing 3D video games. The history of stereoscopic 3D gaming is long and varied: Since its origins in 1968, the techniques involved have fought an uphill battle against technology limitations and a buying public none too eager to wear stuff on its head. In the following 20 two-dimensional slides, we'll explore the near-complete history of stereoscopic electronic gaming--from its birth to the present--with nary a hint of motion sickness. I promise.