The original plan for the manual/backside of the poster was a foldout Candyland-style board game, and an additional card of four cut-and-fold game pieces (using some of the illustrations that adorn the standard manual).
In-Progress image of the board. Would have eventually had some of the manual illustrations with captions in the negative space.
This idea was scrapped in favor of a layout that would be better suited to showcase the spot illustrations done for enemies, etc. -and also because the overlap of folks who would buy a physical homebrew and who would actually cut up something that came with it is likely not a significant number.