Gold, Silver or Bronze, Biking, Swimming & Running.  These are all a part of the 'GAMES' in Medal Tally.  

During normal play, "Medals" will substitute for all symbols except scatters. A free game feature is triggered when 3, 4 or 5 "Feature" icons appear anywhere awarding 10, 15 or 20 free games respectively.  During free games all prizes are tripled.  And the more "Medals" you accumulate during free games the more you win... Accumulate 50+ "Medals" and win the Progressive Jackpot.