Garrys Mod / Gmod Backgammon game

I’m just looking for a simple backgammon game that’ll work for players on a DarkRP server. Don’t need it to have a player vs AI mode just player vs player, and for it to only allow moves and such within the rules of backgammon. Maybe make it have the ability to have spectators (or just make it so the moves can be seen on table just by standing near, but genuinely not too concerned about it), and for the players actually playing to be seated at the table. If you have ideas that’ll make it easier or different ways to do things I’d gladly like to hear it, my idea for the game isn’t set in stone. Price is negotiable as well, not very set in stone on anything.