There's not much depth to discover in Kuru Kuru Kururin. While I had some fun figuring the angles and timing to get around some corners, there's little variation between areas. It strikes me as a brightly-colored version of a toy parents give their kids when they hope they'll become engineers - how do you fit a straight line into a curve? Now do that a few hundred times. The frame of a bird flying a rotorcraft is cute, though, I'll give it that.