This is an interesting 3D modeling and rendering (I use this term
loosely) program. It actually makes use of shading, and does so pretty
well, given the fact that color had not yet come to the Macintosh.
This program actually surprised me when I first used it, as I had no
idea a program with this much capability existed prior to the release
of the Quadra series.

A high-end counterpart, [Pro3D][1], was released in 1986.

Easy3D.image_.sit is version 1.00. Easy3D_v101_dsk.zip is version
1.01.

Compatibility
Architecture: 68k

Make sure you boot from the disk image. I tried to run it under a
separately installed System 6.0.4 only to have it crash.

  [1]: http://macintoshgarden.org/apps/pro3d