Hello, @Slaintemaith! So I go into a lot of detail about this in the description, but basically: instead of the physical board game's P1, P2, P3, and P4 for the four players, this version uses Tabletop Simulator's "seats;" Pr for the red player, Py for the yellow player, Pg for the green player, and Pb for the blue player. This way, players can drop in and out, and there can be some intelligent communication between the score cards and the Tower unit.