Oh it's way way early 90's it's 2d ( if it were 3d it would kill the computer) it ran on I think windows 95 or some sort of DOS shell, the commands would be like, Move turtle Up 12 draw left 22 stop draw down etc and it worked basically x,y Axis its, it may also have been a white screen with a black turtle.

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hum.....
1987 300TD 311,000M Stolen. Presumed destroyed