When I was a kid I used to screw around in Photoshop for fun, making desktop backgrounds for my PSP. I made one, which I've never, ever been able to replicate.
It's a very long shot, but I was wondering if anyone had any inkling as to how you may replicate it.
I never used to save my PSDs, and this is the highest resolution of the image that I have.
There's no 3D work involved.