http://houserules.tripod.com/SkankyKank/coin.htm#METAL COINS
IMC, each city's gladiators, soldiers, and low-lifes have each bit on a CP named, and have designed as many games of chance with the bits as we have with cards. "Bit Games" contain aspects of cards, dominos, and marbles, since captured bits are generally their own reward--as in marbles, the game pieces are the stakes.
This is a companion discussion topic for the original entry at http://www.athas.org/articles/Athasian-Coins