With all good there is bad. With Yin there is Yang. This is for balance. There must be balance in the world or everything will be thrown out of whack. Help keep the balance in the Siren of YinYang by completing each level by eliminating the pre-determined number of YinYangs. The Gods knew how important it was to maintain this balance and now that task has been delegated to you. Match three or more colored stones to help push the balance of nature back to the middle. Don't give up, because everything hangs in the balance.