Stoppers is the 14th Advanced floor in Monkey Ball and Super Monkey Ball, as well as the 33rd Advanced stage in Super Monkey Ball Deluxe. It also appears as the 73rd Ultimate stage with continues, and the 93rd without. It is given a 4 out of 10 difficulty rating.
The floor is mostly flat except for 5 devices each with 6 boxing gloves that say "STOP" on the sides that move when the stage is tilted. The Start is on one side and the goal is on the other. Two bananas are to the left of the center device and two are to the right.
The movement of the stoppers is affected by the angle the floor is tilted. The best way to navigate through this floor is to go around the stoppers on the edge of the floor while carefully tilting the floor, so the stoppers aren't blocking the way of your monkey to the goal. Any sudden movements could cause the stoppers to jerk in front you and possibly causing your monkey to fall out. It is best just to concentrate on the floor movements and getting your monkey to the goal rather than trying to complete the stage as fast as possible.