Bowser's Bullet Bill Brigade

Bowser's Bullet Bill Brigade, or , is the second castle level of Super Mario 3D World and the final one in World 2. It is unlocked via completing Double Cherry Pass, and its own completion frees the Yellow Sprixie Princess who builds a Clear Pipe to World 3. This level autoscrolls.

Layout
The level starts with the player near some Blocksteppers and a Tank, with a ? Block on top of it. The second tank features some Bullet Bills, Crates, and Coins with some Blocksteppers following. The third has a Cannon Box and a Red Ring. After passing some Fire Piranha Plants, another barrage of tanks and Blocksteppers appears. The final tank appears with a pipe on it. The pipe leads the player to the boss of World 2, Boom Boom. After defeating him, a circle of coins and a Warp Box appear. The box leads the player to a + Clock, the Goal Pole and the Yellow Sprixie Princess.

Green Stars

 * Green Star 1: After the first row of tanks, the first green star is guarded by a group of three Fire Piranhas
 * Green Star 2: The second green star is inside a crate on a small tank in the second row of tanks.
 * Green Star 3: After the stamp, there's a large wooden wall with Bowser's face on it. The player can destroy this wall with a cannon to reveal the third green star.

Stamp

 * It's located above a metal gate blocked off by some wooden crates. The stamp is Boom Boom.

Enemies

 * Blocksteppers
 * Bullet Bills
 * Cannons
 * Cannonballs
 * Venus Fire Traps