The author remixed this model.
Using the parametric rugged box by Whity, this is identical to Markus_p's Uno box, but resized to fit the huge deck of Uno No Mercy (168 cards vs 112 of the original Uno). Also added “NO MERCY” to the lid. Print the lid upside down, 2 latches on their side, and the bottom and inner tray as normal. the inner tray can be glued in too if needed.
Like the original Uno box, you will need 6 M3x30 screws. In my case, I printed a set of screws from here to put it all together, except the latches don't have a strong grab, but its still good enough to keep it shut.