World 4: Bowser's Gravity Gauntlet

Breaking into Bowser's Castle

The final stage of World 4, and as expected it is yet another dangerous lava area. From the start, dodge and jump over the fireball rods ahead. Gravity will be contently pointing you in different directions in this stage, so keep an eye out for where the enemy land and move about.

You'll eventually enter an underwater (overwater?) section. Despite being submerged, there will still be plenty of fire and other enemies as you traverse this steam. Afterwards, there is a set of spinning wheels, along with adjacent fireballs. Time your jumps through the changing gravity to make it through safely.

Bowser himself fights similar to his World 2 form. However, his punch attacks add an extra wave of energy and his flame breath will linger for a longer time. Despite this advantages, the basics of the fight are identical to World 2: jump onto the meteorites and ground pound them into Bowser. After four hits, you'll gain a Grand Star and access to World 5.