Your goal is to connect all the same pieces attached horizontally or vertically. You can rotate the group of four pieces internally by pressing the small square. If the square is black, left mouse button rotates to the left, and right button rotates to the right. If the square is red it rotates to the right. If the square is green it rotates to the left.
In the beginning you have $500. Every time you rotate the pieces you lose $1. If you lose all the money you can´t rotate the pieces and the game is over. The quality of playing is measured by the remaining money. | 
