[Beermotor]

If I recall correctly 3D Pipes shipped with NT 3.51 as IIRC 3.5 only shipped with software OpenGL with no support for hardware acceleration.

I remember running it on a DEC Alpha box with an AccelGraphics AG500 and being awed by it.

[watersb]

I think that's correct: Windows NT first. It ran just fine on my 486DX2.