Base Game Features:

When the Yin Yang symbol appears on reels 1 and 3 only, it substitutes for all symbols except Gold, Silver, and Bronze.
The Yin Yang symbol is a Persistent Wild.
When a Yin Yang symbol appears on the top or middle row of a reel, it will move down a row for each consecutive spin until it reaches the bottom.

Repeat-Win and Free Game Feature:

Every time a Gold, Silver, or Bronze symbol appears on reel 5 the corresponding repeat-win Lucky Pot is increased.
Two Yin Yang symbols with a Gold, Silver or Bronze symbol on reel 5 initiates the Free Games and activates the corresponding Repeat-Win Lucky Pot.
During the free games, the Repeat-Win Lucky Pot is awarded every time a Collect symbol appears.
2 or 5 additional free games can be retriggered.
The Repeat-Win Lucky Pot is reset at the end of each Free Games feature.