Well, I enjoyed playing this game because the principle of the game is great and funny especially for me (I'm interested in chemistry). But in the other characteristics, I don't think it's anythink special.

I had to mute the sound. Very grating. The idea was interesting.

The "Allowed" numbers should be more visible. You could move them to the center and add some alpha to it. If the number of allowed particles is low, make it's color more solid.
..or just leave it as it is but make the number white :)

It was a very cool idea. But I had difficulty understanding exactly what was going on. Good try though, maybe I'm just dumb :P

Thanks for your feedbacks guys, it's really interesting !

SusanTheCat > Yep, I had several similar feedbacks too, which is really a shame because I wanted to put a "mute sound" button but was just too lazy to do it, even if it was quite simple. It'll teach me a lesson ! :)

Sudorossy > No, don't worry, you're not dumb :), a lot of people had a lot of trouble to understand how to play too, the "tutorial" is terrible and the moving grapping-particle is quite confusing ;) Thank you for trying it anyhow :)

I thought the concept was pretty wacky (in a good way). I had similar ideas for the theme at first, but abandoned them for accessibility reasons. It was difficult for me to get a hang of the gameplay, but the idea is quite nice.

I would try it, but I am on an iMac.

I couldn't really understand what was going on, or how to use the "atomihook". But I seemed to get better scores when I just didn't do anything :-)

It was really hard to figure out what was happening. The atomihook controls were a bit awkward. Also, it might have been a nice touch to show which atom you currently are.