Koopa Troopa Cave

Koopa Troopa Cave, or World 1-2, is the second course in Super Mario 3D World. It has many Koopa Troopas and purple metal brick blocks. The main power-up is the Fire Flower.

Green Star 1: Between two lines of falling and rising clouds.

Green Star 2: Climb up the stairs of metal blocks, enter the purple Warp Box, and defeat the Koopa Troopas in 10 seconds.

Green Star 3: Collect the Super Star next to the Stamp, then ground-pound the Goomba Tower for the final Green Star.

Stamp: To find the stamp, which is a coin, after leaving the second Cannon Clear Pipe, look for a stair case of three rectangular blocks, then enter the Clear Pipe and collect the stamp.