I reached 24,553pts in the secret lvl.
The ball is stopped and nothing moves,the screen is fully occupied by the big ball...

After you reach 600-1000 pts you have already finished...

I like this concept, but it is not really finished.

I like the physics, the bounce feels nice. :)

..but it needs something more, instead of just going left. Something that enables to clearly feel one passed a level. Collect, reach a higher bubble?? or maybe it's just the end message missing? idk.
When Hubble stops moving, sometimes nothing happened, sometimes it showed the score, sometimes the restart blinked discreetly... kind of confusing.
+right-click was also confusing as it can also open the unity menu.

Secret levels, nyan =^.^=, have achievements but no ending either. (Once I got the growing hubble, passed 500 it's hard to fail, as even if Hubble stops, the Hubble-bubble size rato is big enough to get him going again. At 3-4000, Hubble starts to fill up the entire the screen. At 15'000, there was a zoom out, the row of bubbles became a white line.. What am I supposed then? Give up? even if it's not a fail? *confuuzzed*)

Anyway had a fun time, this is promising! I hope you keep it up! :D

Great graphics and sounds. The problem is I have very little control over what is happening on screen. Right click doesn't work.