I'ma be fully honest. My first play through, I really wasn't a fan of this game, aside from the graphics (which are amazing and perfect for this games style!!) I was so confused as to why there was no visual/audio indicator of when the pieces snap together, and seeing the score consist of a bunch of red circles and only a few green ones made me think I was getting them all wrong and didn't understand why the game wouldn't let me try the same piece again after messing up.
But then I scrolled through the comments and noticed you guys mention you were specifically were going for a chaotic feel! I gave the game another try and then it all clicked! (no pun intended).
You guys really did nail that chaos element!! and once the player gets that in mind, it becomes so much fun to play! I really like the strategy behind when to pick orange piece, blue pieces and all those different effects. And MAN it's hard. But the kind of hard that makes you think "oh come on! I can do this!" and try again and again!
The only thing I'd suggest is adding sound design. It's a little alienating to play the game in silence... but sound design could actually help take bring the chaos element to a whole new level! Perhaps subtle background music can get faster and faster as the time runs down! The correct snap sound could be a satisfying click but the incorrect snap sound could be something that gets more and more obnoxious the more mistakes are made! All that can help induce PANIC! :P
Oh and it might be worth considering changing one of the piece colors near the beginning. Perhaps the default green? That way the first level may not cause confusion with that red/green thing till the player sees the first X. Unless that was intentional to further create chaos, in which case, carry on!! :) :)
Well done with this game! I'm glad I gave it another shot because it was a blast!
-Sasha