This is a puzzle game of laser beams and mirrors. Fang, a former classmate, gave it to me. And it is full of fun. There four generations of this game, the frst one is free and the rests are not. Even the first generation is hard.
The writer must be a person who works or has worked in physics for years since myself works in this field for many years. If you think you are genius, don't miss this one.
