That's a nice take on the 'pipe-game' puzzle game! Quite challenging, but also quite satisfying to play, and the puzzle design was really well done and thought! Until you "get" how to play the game, I also feel that some help would be nice (how you can "chain" turns, etc.), but it's pretty visible how you made the levels in a way that, after some time, you just automatically guess the right way to turn them pipes!
Great job! :O