>>287465037
>>287465125
Yes, the textures for the tile body and faces are simple enough to swap at runtime. The tile.fbx (for UVs) and tile.png and tiles.png are all in https://github.com/hiinaspace/just-mahjong/tree/master/Assets/Riichi . Scribble your english on there.
>>287465441
I originally made the tiles the jp size from http://www.sloperama.com/mjfaq/types.html , but they're way too small in vrchat, so I just doubled them to 36x50x33mm.