I thought this might interest some people out there, obviously most can see the magic in RetroCopy but how are the 3D boxes built?
If you've ever worked with origami or looked closely at any sort of box you would see that it has 6 sides. Now images are usually always stored in rectangular dimensions, and to make things easier we don't create six images and build a box that way. Instead we use a single image that is partitioned with correct dimensions.

I've highlighted the six sides of the box, it's fairly easy to see how it is partitioned and what side is what. The white space is blank space, where other things can go if the boxes need them, like tags and things of this nature. The Mark III box however has no tags. Since this is jpeg, the blank white space doesn't take up much of the image size.
And here is the end result.

With a lot of these cardboard box covers we have incomplete scans so we are forced to improvise some of the sides. This issue of incomplete box scans applies to many systems, but the biggest would probably be NES and SNES. Japanese games also tend to mainly come in cardboard boxes for some reason.
If you have any Mark III boxes, NES boxes or things of this nature we are interested in collecting full scans of them and would very much appreciate if any of you can submit some. 