A great game! Solve it with no frustration or need for a walkthrough. The puzzles were logical and clear. I found a message that said "the plan__sector 9" but I don't know what to do with it. I also have a valve made of sticks from the 7th zone that I didn't find a use for (doesn't seem necessary to finish the game). After finishing the game I quickly replayed to almost the end to see if I can figure out what to do with this valve... still no clue.