The video is missing ( i will post it tomorrow

Visual studio does. But not sure you get in the repo everything you need to rebuild game on a fresh system. So a backup seems also necessary

Yes. pb comes i discovered a bit too late the way Terrain Grid System indexes the vertices was far different from mine. So my symetric methods, path validations are not correct. i will be able to adjust it anyway- row, column and cubic coordinates are ok.

I maintain both cubic coord and row, column. And at the end of course i need word coordinates

I know this game, Carcasone if i am correct ;-) I hesitate to have predefined drawings, but for sure, it's an option. As for side or center, i have to manage also roads and rails. So having something on the hex sides could help. But i will study different solutions and check the rendering.

Not sure , it is active. But seeking for audience is a little strange.

Super idée !