Watch out for the Yin-Yang symbol as it is truly the most powerful symbol on the reels bestowing you with the greatest of riches.
Yin-Yang is Wild and substitutes for all symbols, including the scattered Ingot, thereby increasing your chance of game wins and maximizing the possibility of triggering Free Games in every spin. In addition to this the Yin-Yang symbol can multiply your main game wins up to x4 when substituting. Land one Yin-Yang symbol on reel 2 or reel 4 and all wins are x2. Land two Yin-Yang on reel 2 and 4 and all wins are x4!