[throwaway494932]

The video game Magic Carpet had a couple of 3D modes, anaglyph 3d requiring blue/red classes, and stereogram mode [1]. The latter was not really usable, but it was a cool trick, expecially for the time ('94).

[1] https://youtu.be/iZT-S2F191I?si=8k9jniqA98wgq0Hu&t=1090

[vrighter]

i once found a renderer for quake 2 that rendered in stereograms. Managed to make it through the first level