Fort Fire Bros.

Fort Fire Bros, or , is the first course in the seventh world of Super Mario 3D World, World Castle. It becomes accessible by beating World 6, and its own completion unlocks Switchblack Ruins and Red Hot Run.

Layout
This level takes place in a very hazardous castle with blue lava. As indicated by the name, the castle is inhabited by Fire Bros.

Green Stars

 * Green Star 1: Near the beginning, the first green star in inside an H-shaped Clear Pipe. (see picture)
 * Green Star 2: Immediately after the checkpoint, the player must unveil some invisible rectangular blocks in order to reach a green Warp Pipe. The pipe leads to a room where the player has to maneuver a green ball to a switch that reveals the Green Star.
 * Green Star 3: The player has to activate the Green Ring and collect 8 Green Coins to reveal the Green Star.

Stamp

 * The player must Ground Pound the ? Block in the second Firebar to levitate the player to the stamp.

Enemies

 * Fire Bros.
 * Blue Lava Bubbles
 * Goomba Towers
 * Firebars
 * Thwomps
 * Blocksteppers