Aid Zondulux is FREE logical game based on very simple rules. Your goal is to fill the whole field with "crosses" using your mouse. The field is randomly filled with "crosses" and "zeros". When you click on one of symbols, horizontal and vertical line inverts. Randomly generated puzzles are very challenging and addictive. This game is FREEWARE, so you can play as much as you want and improve your results in Halls Of Fame.