The supplied STL files are designed to create a box and lid to hold a standard size deck of cards.
I created the model in OnShape, use the link below to access the model. The X, Y and Z dimensions of the box can be changed as well as the text on the box to create your own boxes for a variety of boardgames.
If all you want is a means of containing some cards, I would suggest my other thing:
https://www.thingiverse.com/thing:3571626
The lid stays on much better and it supports adding dividers for large groups of cards.
Box.stl | 559.8KB | |
Lid.stl | 1.1MB |