I strongly recommend every friend of mine go to watch an animation created by Guy Collins. Its called 孔明の罠 – Kaizo Trap, you can just search it on youtube, or click the link below.
Its really well made animation. However this is not the point i recommended for, the story and all the puzzle are the BEST on the video, and people can just “play” with the video. It got 6 endings, and never finish the video after you beat it. (i beat the game with some tips.)]
So good luck on solving the puzzles and have fun watching the animations! (tips, most of the link to the next stage are hidden in the video, just simply click on the video link it will led you to the next stage: the next video)