The game of Senet rules can be found on YouTube.
You will have to adjust the position of the printed parts in your slicer so that they will print with little or no supports - it should be fairly obvious, just be aware that the board pieces have a chamfer on the top side. The border parts can be printed with just 4 parts (top, bottom, left, and right) if you have a large print bed (300x300) - otherwise, you will need to print the smaller border parts. The game pieces can be printed with fill or printed hollow - I printed them hollow and filled them with epoxy for added heft.
The author hasn't provided the model origin yet.