Curves is the 7th Advanced floor in Monkey Ball and Super Monkey Ball, and the 6th Advanced floor in Super Monkey Ball Deluxe, as well as the 66th Ultimate stage without continues and the 46th with continues.
This stage consists of one long winding path curving most of the time. The curves are very small at first, but then get gigantic. The goal is on a platform at the end. At the edges of the path are little inclines to help let you not fall off the floor.
There is only one goal, the blue goal. To get it, you must go along the curving path. Don't go too fast, or you might drift off the inclines and fall out.
To save on time, you could skip the first three turns simply by rolling off the inclines where the path meets itself. After that, follow along the remainder of the path.