The visual effects are obviously the main highlight of this game. In fact it's really well-polished for a game jam. No bugs or glitches in sight.
The only issue is that there is really no replay value or actual challenge to the game. It's easy to block every pipe the moment water comes out of it, and if you keep that pattern going, you'll almost always end up with a score around 1000, taking away the replay value.
I did enjoy the game while it did last, though. Combos and more difficulty would've made the game more interesting.