I really like the overal presentation of the game. The sound design feels so satisfying.
I didn't understand exactly why you implemented a timer. The general feel of the game is actually not tense at all, but rather very calm. In my opinion, a timer doesn't fit in that well.
I would also liked to see more depth and variation in the core mechanics, such as: connections can loosen other connections or you cannot draw a connection through the white point. That would make the game more of a puzzle game, i don't know if that's your intention.
Overall i think this game is really good. Great job.