Absolutely beautifully done! Love the atmosphere and the music, the game play is challenging yet straightforward, definitely one of my new favorite time wasters.
Just a couple things, not sure if they are issues with me or the game. The ones in the red levels where you click the point to make them larger, I completed them but still didn't understand what I was doing other than making them bigger. Was I just supposed to make them touch or are they each supposed to get to a specific size? Also in the red levels, the one where it slides on a line and you click to have it pause for a moment, it may be a skill issue on my part, but I feel like the timing of the spikes doesn't always give me enough time to dodge them. I like that I don't have to start the entire game completely over when dying, but instead of having half way levels give me more hearts, I'd rather it be a check point. But that may make it too easy, not sure. Still love it, now I'm going to go beat the blue levels.
edit: After playing some more, I just realized the curser stays paused if you hold it down, I thought it was a momentary pause per click. My bad.
Just Played through for the third time and finally noticed. For the expanding orb levels, there is a very very faint doted line showing how big they are supposed to be to finish the level. They are so faint It took me this long to see it.