Internal Plexus Village

The Internal Plexus Village is a level found when wandering in Princess Peach's Castle. It is a large room designed to look like an area inside the castle, with some houses inside of them. The only star in this level is given by a Toad. Depending on the player's personalized copy, the bowser room can appear. The Bowser room will (of course) look different depending on the player's copy.

In one of the houses, a yoshi egg can appear. Depending on the players personalized copy, it can either break and drop a 1-up, or break and reveal a yoshi (which has the same function as the yoshi on the roof).

Sometimes, the Wario Apparition can appear in the main room.

Reports
1: "I was playing mario 64 as usual, when I somehow warped to this strange place. It looked like a room of peach's castle, but there were multiple house-like shapes bulging out of the walls. They also had doors where you can enter them. I tried exploring this place, when a strange wario head appeared. It chased me with rapid speeds down the hall. I immediately hit the power button when it was very close to me."

2: "I found something strange in Mario 64. I was going into the bob-omb battlefield painting, but just before I hit the painting, I was warped. I warped to a castle-like area with houses which you can enter. I found a toad in one of the houses, and it gave me a star. I collected the star, but when I warped out, a strange error screen popped up. I shut off the console after that."