After Solid States, here's a topic dedicated to two other interesting 3D applications, 3-D Supergraphics (1980) and Atari World (1981) by United States of America.
Images by ebayer videogames-orbit ("stolen" for historical purposes).
I recorded two videos of applications demos. Applications were conceived to run on NTSC machines, therefore to see colors you have to use NTSC machines or enable artifacting on emulators.
You can download the applications on @www.atarimania.com (3-D Supergraphics - Atari World).
Unfortunately Atari World manual isn't available there.
I found it on ebay but it costs 149.99 Euro. I hope someone interested would buy and scan it for the community.
If you have more infos and memories please share them.