The placement of these blocks are out of place amongst the brimstone of the volcano, and are speculated to be the remains of a lost civilization of sorts, however are most likely just for decoration. Volcano blocks refer to a bizarre formation of blocks at the end of the volcano in Lethal Lava Land. Volcano Blocks Main article: Lethal Lava Land#Volcano Blocks This has led some to believe that King Bob-omb has become a 'dud' and has been relegated to a rolling ball at the bottom of the mountain. Coincidentally, a third rolling ball is added to the pit at the bottom of the mountain, which shares the same texture to the Bob-ombs that litter the stage. 'Big dud' is what the Pink Bob-ombs of Bob-omb Battlefield refer to King Bob-omb after his defeat in the first star.

Furthermore, the aquarium is a flooded large box, seemingly in the middle of the sky. However, there have been some anomalies relating to the aquarium, such as the darker Aquarium Limbo. It's placement on the iceberg is questionable, since it is a well-known secret level and is mandatory in getting all 120 stars. The Secret Aquarium is one of the Castle's many secret stars, found within a small alcove in the Jolly Roger Bay room. Secret Aquarium Main article: Secret Aquarium It could be that this sign was originally intended for another area, but was left in this area by accident. The sign has raised many suspicions as to what it is referring to, as the player isn't needed to be quiet within this floor and it isn't even a hallway. It reads 'Shhh! Please walk quietly in the hallway!'. On the second floor of the castle, a billboard can be found nearby the stairs that lead up to the third floor. This was answered in Super Mario 64 DS when playing as Luigi and using the Power Flower, where the door leads to an entirely blank white room with one of the Castle's Secret Stars. One of the most common points of contention was what's behind the mirror, and the door on the other side. The Mirror Room has been the subject to speculation and anomalous activity for quite a while.

4.8 Lavender Town & Polybius were cover-ups for Mario 64Ībove the Surface Backwards Long Jump Main Main article: Princess Peach's Castle/Second Floor#Mirror Room.

4.6 Sequel was Cancelled due to Temporal Leakage.

4.4 Miyamoto stole Mario 64 from Argonaut.

4.2 Enchanted SC88 samples used in the soundtrack.

3.7 Toads Literally Trapped in the Walls.

2.13 Zelda 64 Beta Assets in Wet-Dry World.

2.11 True Locations of the Painting Worlds.

2.7 Mario enters Wet-Dry World early in the Got Milk Commercial.

2.6 How Bowser got into the Castle with his Sub.

1.2 'Please walk quietly in the hallway!'.

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