I think I might have encountered a bug, sometimes when you complete a quantum, the game freezes after the cut-scene when the screen turns white. I've only played this on internet explorer so I don't know if it's the browser or not.
As for the game itself I rather enjoyed it. It's a nice upgrade from the previous game, with voice acting and improved graphics. My only complaint was it got kind of difficult after a while trying to remember tiers in order to organize the pieces.
Overall, well done.