This entry has the MOST relaxing mood so far, even though it challenges with some mouse work. Really like the graphics & sound approach, fits very nice with the concept of atom drawn on a paper, reminds me of school a bit.
Controls were a bit hard to grasp before I got first success (I didn't associate the length of the "cut" with energy cost), but then it was easy. ..Also got 2% efficiency on last level, but it works!
P.S. It's nice to see a familiar face once in a while. Maybe I was using other username on a certain modding site. Hello Minecraft modding fans! :)