Chaser is the 18th Advanced floor in Monkey Ball and Super Monkey Ball, as well as the 37th Advanced stage in Super Monkey Ball Deluxe. It also appears as the 77th Ultimate stage with continues, and the 97th without. It is given a 3 out of 10 difficulty rating.
This stage resembles a treble clef. There is a blue goal, a green goal, and a red goal which move away from you by riding on skis. The blue goal moves the slowest, the green goal moves faster and the red goal moves the fastest. When the goals reach the end of the track, the green and red goals just fly away while the blue goal stays behind.
When you start, you can use a shortcut where you roll a bit to the right and land on the path below, and simply wait for whichever goal you wish to go through.