World 9-8 is the final level in the game New Super Mario Bros. Wii found in World 9 and is the eighth and final secret level. It is unlocked after collecting all the star coins in World 8. Once you beat this level, you have completed the game 100%.
The most prominent features of the stage are the bouncing clouds and the King Bills, which only appear in this stage.
- Big Fuzzies
- King Bills
- Star Coin 1: Not long after the beginning of the level are three rail-riding Fuzzies surrounding the first Star Coin, along with several other Coins. Mario and co. must jump to the Star Coin from a Cloud at the right time to avoid touching any Fuzzies.
- Star Coin 2: After the area with the first P Switch and several Brick Blocks, the second Star Coin is rail-riding behind three Fuzzies. Mario and co. must again jump from a Cloud at the right time to get it without touching a Fuzzy.
- Star Coin 3: The third Star Coin is blocked off by many blocks in the area where two King Bills emerge and break all of the aforementioned blocks. Mario and co. must wait for the King Bills to destroy the blocks, then fall to the Star Coin.