Got 15 with a poor plan and dumb luck, but I suspect it can't be done otherwise. I looked at a walkthrough for 16. All in all, this game is based on a noteworthy concept, but has poor visuals (strain your eyes and make it hard to tell whether you're moving sth or not), so-so gameplay (thought doesn't count as much as precision and timing - which isn't always a bad thing, but for this kind of game it's frustrating), and inadequate controls (your clicks need to be very precise around the hotspots). I'm being generous in giving it a 3 out of 5.
I'm on 11, I've made a grid, each generator is in its own little box, and 4 to 6 sparks are confined in each one. I nearly made it work, and I can't see any better solution possible. But the bar still isn't filling up :(
@Kenji: Who are you calling an idiot? Didn't your mother teach you any manners? And you're wrong anyway, they DO count. That's how I got the Horror entry in the bestiary, by doing Practice with Biters.
I think I've found a bug (and I don't mean the fly :P): When two connected ice-covered lillies are nest to another ice-covered lilly in the same row, and the frog is sliding along them from the direction of the two connected lillies, it stops before the last lilly.
At level 30, I thoroughly like this game. 5 stars for the original concept and the clever levels, even if the implementation is wanting. The first commenter mentioned something about the game being "stolen"; I don't think this is the case. Even if the premise has appeared somewhere else, a lot of work went into making these challenging levels.
 "Draw-Play 2"){kind=icon}
 "Speck Oppression"){kind=icon}
 "Dark Cut"){kind=icon}
 "Johnny Rocketfingers"){kind=icon}
 "Open Doors"){kind=icon}
 "Hexiom"){kind=icon}
 "Synapsis"){kind=icon}
 "Whiteboard Tower Defense"){kind=icon}
 "Amorphous+"){kind=icon}
 "FrogFly"){kind=icon}
 "Music Catch"){kind=icon}