A mechanical wheel casino game of chance using a freely moving internal indicator such as a ball within a housing to randomly move and bounce into one possible outcome segment in a set of possible outcome segments. The expected value is controlled through a combination of geometrical and mathematical considerations. The set of possible outcome segments randomly picked and placed at the bottom of the wheel so that as the wheel stops, the freely moving, bouncing ball lands in one of the possible outcome segments. The segment the ball lands in is sensed and the award associated with the landed in segment is paid out to the player. A periodic testing method determines whether mechanical bias exists in the casino game of chance.