Though I've played the majority of system 11's, I believe that the alpha numerics' are on a decently even scale rule wise. The technology in the mid to late 80's & early 90's had limited capacity in terms of memory storage. Yes, the game play varied in terms of rule & layout from their system counterpart, but the overall rules were limited to the board's total recognition output. Atari = system 80 ~ early Nintendo = system 11's ~ Playstation 7 = JJP!!!