Connect Four - Given up :-)

When we made our TicTacToeGame in the fablab ( http://hci.rwth-aachen.de/fablab ) of the RWTH-Aachen, we where aware of the limited gameplay. A game, which works a little bit better is known as "Connect Four". Using integrated circuits as multiplexer, it would be possible to light up a bigger matrix than 3 by 3, which makes a four win scenario possible.
Using the standard arduino cube example, you can make a bigger one with a four-gamefields width, heigth and depth with 3 leds in each gamefie