Negative World

Negative World is a course in Super Mario 64 DS. It can be accessed via a painting in the fourth floor.

Stars
Negative World only has one star. The name of the star is simply "Negativity Begins".

It begins with Mario falling down, into an industrial-esque run-down world. The sky looks purple and the place itself looks extremely broken. At first, it appears as if he is alone, but he then sees a goomba.

The Goomba speaks to Mario, saying the following:

"A long, long time ago, this used to be a certain kingdom.

However, 50 years ago, it was said that a horrific tragedy struck this place and...well...let's just say there's a reason as to why the sky is so purple.

...

But yet you seem so familiar.

Who knows?

Maybe YOU can bring this castle to it's former mushroom glory!"

After exploring for a bit, Mario will then find a Waluigi plushie with text on it, of which displays the following:

"LOG 15.

THE KINGDOM IS OURS SIR.

WE CAN NOW ATTEMPT TO FULLY TAKE OVER.".

After this, the game may either restart or take Mario into a room.

Boss Battle
After Mario explores the room for a bit, he will be able to find a door. Entering this door will then begin a boss battle against a ginormous Waluigi Plushie.

The boss battle begins with the plush throwing purple rocks at the player, and Mario has to punch the rocks back at the plush. After this, the plush will begin to spin. At this point, Mario must dodge the plush's spinning attacks, of which mainly includes jump-spinning or spinning around, both with fire, or else he will die, thus, restarting the game.

This cycle will go on for a while, but then the second-final phase will occur, where the plush begins throwing fire purple rocks.

If Mario is able to pass through the second-final phase of the boss fight, then the final phase will be present. This final phase, however, has not been well-documentated, and there is very little evidence to support it. However, from what can be known, it is possible that the plush grows larger at some point during the final phase and that a purple figure appears.