Eaten Floor is the 2nd stage of Volcanic Magma in Story Mode (19th in Super Monkey Ball Deluxe), the 2nd stage of Advanced in Super Monkey Ball 2 (22nd in Super Monkey Ball Deluxe), and the 82nd stage of Ultimate without continues (62nd with continues).
This stage is shaped like a large, upside down triangle with many differently-sized square holes. There is less of the floor on the right side of the stage. The goal is at the top-right corner of the stage.
The only goal in this level is a Blue Goal. It is considered easy. Head to the left, and continue until you reach a gap. turn around the gap and continue around other gaps until you reach the goal.