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CouchCoopDesk

World 5 of 13

Super Mario 3D World + Bowser's Fury: World 5 walkthrough

A world that ends in King Ka-thunk's castle.

  • About 23–31 min in the videos
  • 1 part · 2 steps
  • 1 boss

Compiled from 2 playthrough videos and 4 guides · checked Oct 18, 2026

0 of 1 done
Video: ProsafiaGaming on YouTube. Loads from youtube-nocookie.com only when you press play.

What each player can do here

P1 · Player 1
  • Everyone plays the same courses at once. Anyone can float into a bubble to sit out a tricky bit, and players can lift and toss one another.
P2 · Player 2
  • Up to four people play 3D World together; lives are shared across the group.

If your skill levels differ: A newer player can float into a bubble at any time to skip a jump that looks too hard. How to split the roles

King Ka-thunk's Castle

Part 1 of 1. Beat King Ka-thunk.

  1. BothHe crashes down onto the floor; the area he will land on lights up first, so stand outside it.
  2. BothWhen he lands face down, ground-pound his back.

Where people tend to fall

  • After each hit parts of the floor fall away and he moves faster.

Boss

King Ka-thunkThe castle boss

  1. The fight: Stay out of the lit area, then ground-pound his back. Three hits.
Sources (6)

Steps compiled from 2 playthrough videos and 4 text guides, checked Oct 18, 2026, and written in our own words. We did not play the game for this guide.