Mario must clean up acres and acres of sludge and flith that is on the island. F.L.U.D.D. allows him to do this. F.L.U.D.D. only has a small quantity of water and Mario must jump into a pool of water after the water runs out. F.L.U.D.D. also has several other things it can do. If Mario aims the nozzles down, Mario can float for a few seconds until the water runs out. There are also areas where Mario takes F.L.U.D.D. off and jumps around himself without assistance. The first time he goes he has to go through the area with no assistance. The second time he goes, he has to collect eight red coins in a time limit.