The Pandamonium game seen around sim is a card game originating in Himinheim and is a favorite of rogues and gamblers. It is played between two people though it has no formal betting system. It was usually played as a way to pass the time or in place of a duel in order to solve conflicts.
The Royal Game of Ur is a dwarven game in origin, played to test ones mind, skill, and luck. It was often a way to pass time during guard shifts, and for this reason became popular elsewhere as a way to keep entertained when on duty.