On Normal mode your goal is to match as many tiles as possible. Each level up will require more shapes to be matched to reach the next one. The game is over once no more swaps are possible.
On Timed mode you race against the timer. Each swap adds a bonus but also decreases
How to play. Click on the object you want to move, then drag with your finger on the other object, 2 rektangels will show and click on second object. Vertical or horizontal only.
Shapes will drop down and new ones fill in from the top. Fill the progress bar on the right side to level up. Difficulty raises each level up.
Once the swap bar is filled on the right side, click the bomb icon to clear the board
http://iwizpro.com/yin-yang-game/
https://play.google.com/store/apps/details?id=com.iwizpro.yinandyang