The original box for blank slate is too big for a game that is effectively a deck of cards and something to draw on. So I designed 2 models to fit it more precisely. My favorite is the wide/short model.

The wide/short model looks nice sitting closed, and feels well-balanced, but its downside is that the cards are split into 3 piles, with some buried underneath the other components, as shown in the final picture.

The tall model looks great open on the desk, but feels a little awkward with its closed dimensions being so tall. Note the my pictures include chamfered corners that I didn't like, so I didn't upload that model.

3 of the 4 stls can be split into parts for multi-color printing. Follow the guide here if you don't have a multi-color printer, like me. Or just delete the letters and do a single color swap: https://forum.prusa3d.com/forum/original-prusa-i3-mk3s-mk3-user-mods-octoprint-enclosures-nozzles/simple-way-to-print-in-real-multi-color-without-mmu-or-layer-height-based-changes/ Although honestly that guide overcomplicates things. And the simpler way is explained in this pi case project. I just tweak 3 additional things on my MK3S: 1) On each extruder, set “Retraction when tool is disabled” Length to 0. This prevents extra extrusion from an unretraction on the start of your new color. 2) Enable a tiny wipe tower, because for some reason my extruder seems to dramatically under-extrude right after a color change. 3) This is my tool change gcode. After M600, the head moves back to its prior location. And I don't want it to move to the object I'm printing before the wipe tower. So I move it to the end of the purge line. Your purge line end might not be the same as mine, so review your g-code, and use those coordinates.

M117 Upcoming change to [next_extruder]
G1 E-2 F600 ; Retract at the end.
G1 X100.0 Y-2.0 F7200.0 ; Move to the end of the purge line to release the blob there.
M600 ; Switch to Extruder [next_extruder]

I forgot to include the move to purge line code in the tall model, and that's why you see that black streak