Took me a while to work out what was happening and it was perhaps a bit slow paced (for me anyway). However once I'd worked out I enjoyed experimenting with the different patterns.

Neat idea, could be better developed. When all the ball are placed the game could speed up a little. It's kinda boring watching the game hoplessly waiting to finally lose.

Interesting to tinker with. Isn't ideal waiting for level to end after planting all the spheres

This is cool, and really innovative! The sound is great, I just wish the balls moved around a little after I placed them.

A very interesting idea. Like other commenters have said, though, it's a bit annoying for the end after we've placed all the spheres, especially since we apparently need to do this multiple times in order to reveal everything.

I like colors combining.

I usually don't like hand-holding in games, but I was completely lost on what I was supposed to do in this game.

I spent a lot of time trying to reveal the full message, but though I discovered all black places, I can't seem to "win". Is there a final screen?

@Jorjon (Spoiler Alert!) There is no "final" screen, but you can win a personal victory by discovering all the interactions and gaining a mastery over the arena.