(There's no video for Pixar Showplace 2.0+/Pixar Showplace 2.0 CD yet. Please contribute to MR and add a video now!)
Program for show and use PR Renderman for render 3D models create in other programs. Program can also do motion animation. Pixar stop support and sell it 1995.12.22 (after sucess create their first movie Toy Story) but not open source it for customers support them selves.
Modern version is open source USD (Universal Scene Description) but not have PR Renderman software (it have new real time renderer call Hydra):
Macintosh Repository have Pixar Showplace RIB Developer's Kit, but need Showplace program for use this kit.
(There's no download available for this software yet. If you've got a copy of that software, upload it now!)
Architecture: 68K (68030) + FPU
Emulating this? It should run fine under: Basilisk II