Cliff is a stage in Super Monkey Ball Deluxe that is exclusive to advanced challenge mode. The level features a large block with jagged edges. A path snakes around the edge, however it is thin, meaningn that the player must sidle against the wall of the block. The entire block must be travelled around to reach the goal. Towards the end of the course, the walls get more jagged, making it harder to stay against the walls.
The goal platform is close to the player at the start, however a gap seperates the player and the goal. However, with enough speed and good accuracy, It is possible to bounce off of the wall and be propelled onto the goal platform, saving a lot of time, as this stage is lengthy.