Very interesting stuff.
Paul, Correct me if I'm wrong, but are CAM files raw bitmaps with 15-bits color and an header?
If so, I could make a BMP to CAM converter.
Also, I'm glad that someone finally found out what it_is_me_your_father do.
Edit:
Also, You can see the order of the CAM files to see which parts were added first and which parts were added later.
For example the first level didn't have the 2 screens with the Slig and the door originally (Where the background is orange), and it jumped to the screen where you have to jump over the landmines.