Nintendo’s 1995 Virtual Boy was a whole cartridge based game system inside a desktop-mounted-head stereoscopic immersive display. Designed by Gunpei Yokoi of Gameboy fame, and offered for $180 retail, the market was less than kind. It was withdrawn from the market in less than a year and now can still be found late in the day at weekend garage sales.
The actual displays were unique, a rapidly vibrating linear array of 224 red leds. The array was vibrated at 55 hz, sweeping out a dim red raster. The concept was borrowed from Reflection Technology which had introduced a monocular augmented reality head mounted display in 1990.
Needless to say, Nintendo dumped Yokoi despite his success with Gameboy, and he died in a car wreck a year later. In many ways the Virtual Boy also put the final nail into the 90’s VR craze.