Rings is the 46th Expert floor in Monkey Ball and Super Monkey Ball (85th in Super Monkey Ball Deluxe), World 10-10 of Story Mode in Super Monkey Ball Deluxe, and the 235th Ultimate stage without continues (195th with continues).
This stage involves a bunch of indented rings that you must cross. They are steeper as the stage progresses. There are flat areas that the monkey can use to rest; one of these has the blue goal on it. There are white markings, indicating where to jump (indigo in Super Monkey Ball Deluxe). The green goal is located on a flat, circular platform at the end. In Super Monkey Ball Deluxe, this stage is renamed Ring and is given an 8 out of 10 difficulty rating.
To get to the blue goal, start from the left, so you will end up at the blue goal as you make your way. Swerve back and forth until you reach the blue goal. Go at a fairly fast speed to maintain your momentum. Once you are near the goal, roll gently onto the platform on which it is, so you will not overshoot it or fall out by running into it. Then, once you are on the flat platform, roll into goal.
To get to the green goal, start from the left or right. Then, repeat the same strategy as for the blue goal, but go past it and onto the green goal. You will need to have a lot of speed to make it onto the green goal platform, so try to gain as much speed as you can. Once you make it onto the green goal platform, roll into the goal.