Cool game! I like the look and feel of it, especially the sounds and camera shake. It gives good impact when you press the buttons. I was a bit confused at first, until I read the description further and found out about the number you can use to decrease the water level. Once you understand it the game loop is quite fun, although even at the lowest speed, the water is quite fast; it feels like subtracting from it doesn't amount to much.

This is very Game & Watch. I don't think works here though, especially since there's already a pseudo-timer in the form of the rising water. I only ever lost to the timer, which always felt bad. Aside from that I enjoyed the game.