Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:3183463.

Remixed game. Made it bigger by default without having to scale it. Resized the pegs accordingly and gave them a taper on the bottom for easier insertion in to the holes. Gave the top a grid pattern linking the holes. This just adds a nice look to it and looks even better if you use multiple colors to define the pattern. The pegs are sized .2mm smaller then the holes in the board. All done in tinkercad.

If you want to do a multi-color print, I did my transitions at 17.2mm and 18.2 mm.