From: VirtualGem

This is an interactive virtual reality program created with VISTA PRO. 
You will need a VGA display. Commands are issued by Joy Stick, Mouse or 
Keyboard. Experiment to find how to navigate! :)

Some doors open with the right mouse button when you are near... 
others you can drive right through! There are 13 unique places to go. 

Shift ESCape ends the demo