“Not gonna lie, I'm a little impressed you've made it all the way here. Impressed and GLAD! It means I get to hit you with the greatest show of all time... I mean that literally. I'm gonna hit you now. Get ready for the most amazing, groundbreaking show ever produced! It's time to get this KnuckleFest started! Gwahahaha!”
The level starts with a row of Fire Knuckles smashing Iron Blocks above the player, showing them that they can destroy these kinds of blocks. Not far after that is a platform that moves when the player jumps on it, but moves faster if ground-pounded. There are then some Metal Gamboos, more Fire Knuckles and more Iron Blocks. Before the first checkpoint is a Bull's-Eye Blaster that fires Bull's-Eye Billet Trains that home in on the player.
After the first checkpoint are more Bull's-Eye Billet Trains, Bill Blasters that fire Bullet Bills and moving platforms powered by jumping. There is then a long line of Fire Knuckles that break Iron Blocks protecting moving platforms. After three more Fire Knuckles there is a pipe leading to the second checkpoint, but it is high up in the wall and the player needs the assistance of a moving platform to enter the pipe.
Beyond the second checkpoint is a Wow Bud that when activated causes the Wonder Flower to appear. Upon collecting the Wonder Flower, the player will strike a pose, and "Bowser's Blazing Beats" will play, causing all Gamboos to dance to the music. In addition, Bill Blasters, Bull's-Eye Blasters, pipes with coins and Fire Knuckles all follow the rhythm with their abilities. This is a long section where the music progresses with the player's progress. Along the way, there are also moving platforms that add xylophone-like sounds to the music as they move. There is eventually a dead end, and once it is reached, the music goes to conclusion and the green lava below will rise up. Fire Knuckles to the sides will break Iron Blocks to the music, and once the top is reached, the last seven Fire Knuckles will break the last six Iron Blocks in order and finally a cage containing a Wonder Seed, ending the music with a sound of audience applause. After the Wonder Seed is obtained, the level returns to normal. To the right is a pipe that will take the player to the goal. One final moving platform and Bull's-Eye Blaster will help support the player to make it to the top of the flagpole.
A Blue Toad Hidden Character Block can be found floating eleven blocks directly above the first Checkpoint Flag. To reach it, the player must bounce off of the Bull's-Eye Billet Train nearby. It contains a flower coin.
^ abcdefghijklmnIn-game displayed on the world map from Super Mario Bros. Wonder (version 1.2.0, stored internally as Course064 in message file GameMsg/Name_Course.msbt).