Bowser's Highway Showdown

Bowser's Highway Showdown, also known as , is the final standard course of World 1 in Super Mario 3D World. It is a Castle with many Soccer Ball Bombs, with Bowser serving as the boss. the Green Sprixie Princess is held prisoner in the castle. It is unlocked by completing Plessie's Plunging Falls or Switch Scramble Circus. Ten Green Stars are needed to enter and its own completion frees the Green Sprixie Princess who builds a Clear Pipe to World 2.

Layout
This course begins in a road with two Soccer Ball Bombs, a Green Ring, and a Goomba Tower. Later on, there is an area with two Cannons shooting Soccer Ball Bombs. Some Thwomps and a Cat Wheel appear soon after. A short path with a Goomba Tower and a Green Star follows. The road ends in a wall made of many stone Brick Blocks. The player must use some nearby Soccer Ball Bombs to break the wall, and get to the nearby Warp Box leading to the boss. After climbing up a staircase, the player encounters Bowser in his car. Once defeated, a Warp Box will appear which leads the player to the Goal Pole and the Green Sprixie Princess.

Green Stars

 * Green Star 1: Near the beggining of the course, the player must activate the Green Ring and collect the 8 Green Coins to make the Green Star appear.
 * Green Star 2: For this Green Star, Cat Mario is required. Shortly after the first green star, the player must activate the Cat Wheel and then scale the walls to get the star.
 * Green Star 3: After the second star, a Goomba Tower holding the star captive appears. The player must defeat the Goomba Tower to get the star.

Stamp

 * Near the beginning after the set of moving platforms is a wall of gray blocks underneath a Cat Wheel. A bomb from the nearby cannons must be kicked into the wall to find the course's Stamp.

Enemies

 * Goombas
 * Goomba Towers
 * Thwomps
 * Bowser (boss)