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World 4 of 8

Super Mario Bros. Wonder: World 4: Sunbaked Desert walkthrough

A dry desert where Bowser Jr. has drained the water for a pool party in his palace.

  • About 71–74 min in the videos
  • 2 parts · 6 steps
  • 1 boss

Compiled from 2 playthrough videos and 6 guides · checked Oct 18, 2026

0 of 2 done
Video: ProsafiaGaming on YouTube. Loads from youtube-nocookie.com only when you press play.

What each player can do here

P1 · Player 1
  • Mario, Luigi, Peach, Daisy or a Toad: grabs the power-ups, takes the hits, and can bring a fallen partner back by touching their ghost before it fades.
P2 · Player 2
  • Yoshi or Nabbit: no damage from enemies, but no power-ups either. A Yoshi can carry a partner on its back.

If your skill levels differ: Give the newer player Yoshi or Nabbit: Nintendo recommends them for players just starting out because enemies do not hurt them. The trade-off is that they never transform with power-ups. How to split the roles

The courses

Part 1 of 2. Open the desert and clear its courses.

  1. BothIt takes 10 Wonder Seeds from the Petal Isles to open the desert.
  2. BothAn optional course is behind a door that opens when players stand on the three buttons marked with ? on the map.
  3. BothFlight of the Bloomps, the Crouching High Jump II badge challenge and the palace itself are the four-star courses.

Sunbaked Desert Palace

Part 2 of 2. Beat Bowser Jr. in the water.

  1. BothThis fight is in water. He chases you with a spinning shell; swim in a circle to stay out of his way and hit him when he stops.
  2. BothAfter a hit the water drops and water balls bounce around the room; you can swim through those to dodge him.
  3. BothNext the water moves up to the ceiling and spikes cover the floor, so get off the ground and into the water fast.

Boss

Bowser Jr.The palace boss

  1. Full pool: Circle away from his shell spin, hit him after it.
  2. Water balls: Use the bouncing water balls to dodge.
  3. Water on top: Spikes on the floor; stay up in the water.

Achievements and extras

  • If someone loses a life, the others can touch their floating ghost before the timer runs out to bring them back without losing a life.
Sources (8)

Steps compiled from 2 playthrough videos and 6 text guides, checked Oct 18, 2026, and written in our own words. We did not play the game for this guide.