To complete the level you must stack a pile of gems that are worth your target dollars. Every dollar over the target, at the end of the level you get as a bonus added to your score. Pile them on top of each other to reach the height targat at the top.
* GemStack is controlled via the mouse and keyboard * Use the mouse to place and move around your gem. * Click the left button on the mouse to drop/place the gem. * Use the left or right arrow keys to rotate a gem. * Press P to pause the game