Cosmo Lemans (Thundering turbo)

Cosmo Lemans (Tomytronic 3D) 1983

First stereoscopic 3D handheld game,  first color handheld game

Gameplay video

Earliest Magazine review- Electronic Games (1983)

Trivia:
1) The device featured a strap so the player would be able to wear it around his or her neck in between playing. The Tomytronic simulated 3D by having two LCD panels that were lit by external light through a window on top of the device.
2) First home stereoscopic 3D game, made years before Nintendo 3DS.

3) First graphical 3D handheld is Blue lightning (1989).

4) Watch SubRoc-3D for more.

5) Japanese game, released in USA as "Thundering turbo".

6) Another stereoscopic console in 1983 was Vtech 3D Gamate (only 3 games released).

6) Game is not emulated.