Raytrace Lite is a free puzzle logic game that revolves around one of the most beautiful phenomena – light refraction. With more than 120 levels to go, you’ll have plenty of opportunities to prove yourself as a pathfinder for your laser rays. You can enjoy: Unique system of laser beams intersections. HD 3d graphic and lighting. 120+ levels with different complexity in 5 boxes.
All The Answers and walktrough can be found here