Well, I've finished the schematic so I've started to place the components. It will take a while due there are 559 components in total, with 273 LEDs.

And this is the A4 prototype with only 91 cells, I have drawings of other bigger designs with 169 cells and even 505 in a 70x70cm board!
This is made in only one circuit due the small size of the boardgame, for bigger boards I'll use smaller circuits as 'rows' and connect them, so it will be easier to design.