All the models needed to print the 3 players, 3D chess set (and playing pieces). I have made a dragon and a Greek pillar version of this board game. Both sets are inherently large board games in physical size, but the dragon set is considerably large. The chess pieces are from other Thingiverse files and have been scaled to fit these chess boards. The chessboard itself has a square size of 4cm by 4cm. The STL files have been split into size to fit on a Creality 3 Pro printer, as such the dragon heads used needed to be separated into 7 STL files.

The Greek pillar version of this game can be easily made into a 2 or 3 player 3D chessboard. The dragon version needs different models for the egg in the centre to be able to do this. I have added both versions for everyone here.

I have tried to tag the Thingiverse files/projects I have used to make these sets herein but for some reason, the ID or name kept showing 0 results for each project. I have therefore included them below;

Dragon skull from Skyrim by dmaccallum March 03, 2016 https://www.thingiverse.com/thing:1386439/files

Dragon Egg box Mi by Lalala65765 https://www.thingiverse.com/thing:2779286

Dragon Chess Set By MartialDesign by Johnny234 https://www.thingiverse.com/thing:2870172

Lowpoly Ionic, Doric, Corinthian Columns by Tubal_Cain August 24, 2020 https://www.thingiverse.com/thing:4578336

Organic Chess Set by NTX9 April 07, 2019 https://www.thingiverse.com/thing:3547967

The original files were made as my entry for the Instructables 3D Printing Contest, but have been updated to the files herein, you can see the Instructables page here; http://www.instructables.com/id/3-Player-3D-chess-set/