Curvature is the 32nd Expert floor in Monkey Ball and Super Monkey Ball, and the 61st Expert stage in Super Monkey Ball Deluxe. It also appears as the 171st Ultimate stage with continues, and the 211th without.
The stage also appears as Expert Floor 29 in Super Monkey Ball Jr., although with many of the curves made a bit less round to compensate for the D-Pad.
This floor features a spiral-esque platform that incrementally decreases its width, getting to be about as narrow as someone could be able to balance the monkey.
This stage takes a lot of patience. Go very fast on the wider sections, so you will have enough time to balance carefully on the narrower sections. Go slowly on the narrow sections, especially the last curve; and roll into the goal.