4 Ludwig's Castle

#4 Ludwig's Castle is the final level in the Twin Bridges area of Super Mario World. It can be accessed by completing Cookie Mountain or Butter Bridge 2. By completing this level, the player gains access to Forest of Illusion 1. It consists of a maze-like small-roofed area, a spike escape, fences with Climbing Koopas, and a boss fight with Ludwig von Koopa.

Overview
The first room has Bony Beetles and Ball 'n' Chains. The player must carefully avoid those to get to the next door. There is a mushroom just after the door. Also, there is a secret path that the player can take, which leads to a 1-Up bonus game. In the next room, the player has to deal with a spiked roof that slowly goes down. The player must hit the OFF switch to make it go back up, and run towards the door on the left, avoiding the Podoboos, to avoid getting crushed. In the third room, there are fences with many Climbing Koopas, as well as more spikes. Behind the red boss door is Ludwig von Koopa, whom Mario can either kill with fireballs or 3 hits in the head.



After Mario defeats Ludwig, he retrieves the imprisoned Yoshi (which is trapped in an egg), and attempts to blow up the castle. However, the detonation causes the castle to rocket into the air, and it crashes into a nearby mountain.

Boss Battle
After Mario/Luigi reaches Ludwig room, they must avoid the fireballs he spits out. Jumping on him, will make him spin around in his shells and after he stops, Ludwig will leap out to the opposite side. Jumping on him 2 more times will send him flying in the wall where he explodes.

Enemies

 * Bony Beetle
 * Ball 'n' Chain
 * Podoboo
 * Climbing Koopa