Nintendo's Virtual Boy (バーチャルボーイ, Bācharu Bōi) (also known as the VR-32 and Virtual Utopia Experience during development) was the first video game console capable of displaying "true 3D graphics" out of the box. Whereas most video games use monocular cues to achieve the illusion of three dimensions on a two-dimensional screen, the Virtual Boy creates an illusion of depth through the effect known as parallax. In a manner similar to using a head-mounted display, the user looks into an eyepiece made of neoprene on the front of the machine, and then an eyeglass-style projector allows viewing of the monochromatic (in this case, red) image.
It was released on July 21, 1995 in Japan and August 14, 1995 in North America at a price of around US$180. It met with a lukewarm reception that was unaffected by continued price drops. Nintendo discontinued it the following year.
Source: Wikipedia, "Virtual boy", available under the CC-BY-SA License.