Looks Good
I only gave you a 9 because like every 5 seconds it "terminated particle do to lag" when my computer wasn't even close to lagging... :/ So, i didn't get to enjoy the full experience of this "particle playground" but, I can't give you any lower than a 9 because it looks quite good, and based on your previous work, I'm sure it will get great reviews and many people will enjoy using it.
Great job :)