The rotating mechanics works with your amazing concept so much. Your game has a really good theme and I also like how those particles gathered before the ball moving. I think that when pressing SPACE, the atoms slowly stop and turning the other way feels smooth and comfortable to play with. It's very natural and it provides players with a good transition. The music and sounds also match so well. I played to the third stage and I would suggest that if the nuclear is actually growing, it will be easier for me to understand when I'm about to go to the next stage. Also in the future stages, I expect that there will be more than one atoms moving towards the center nuclear since after being skillful, I guess more atoms increase the difficulty to the next level. Overall this is a greatly polished game!