Beta Lobby B

Beta Lobby B is an area in B3313.

Description
The area is traversed similarly to the vanilla Super Mario 64 castle lobby. All numbered doors lead to paintings, while the middle doors at the bottom lead to a hallway with another single door at the end of it.

The main room's layout is identical to the other beta lobbies.

From left to right the numbered doors are labeled 1, 2, 3, and 4.

Origins
The main room's model is taken directly from the Shoshinkai beta build of Super Mario 64, with some discrepancies in others regarding wall textures, which are also taken from the game's beta or vanilla files, along with the paintings.

The music playing is the "Inside Castle" theme from the vanilla game's OST.

Leading here

 * Beta Lobby A / Beta Lobby E: Enter the top double door and then the trapdoor in front of the Bowser painting after defeating Bowser.

Leading away

 * Frosty Highlands: Enter the leftmost door (labeled 1) and then the painting.
 * Snow Tunnels: On rare occasions, this painting may send you here instead.
 * Whomp's Kingdom: Enter the second door from the left (labeled 2) and then the painting.
 * wf.z64: On rare occasions, this painting may send you here instead.
 * Blazing Bully Base: Enter the second door from the right (labeled 3) and then the painting.
 * Jolly Roger Lagoon: Enter the rightmost door (labeled 4) and then the painting.
 * Castle Grounds: Enter the double door at the back.

Two-way

 * Beta Lobby C: With 10 stars, press the C-Up button in the middle of the main room and look at the ceiling (similarly to how you would access the wing cap stage in vanilla SM64).
 * Plexal Upstairs: Enter the double door at the top.
 * Plexal Lobby: Enter one of the middle doors and then the one at the end.

Trivia

 * The strange noise that plays sometimes when entering doors (Most notably the door to Plexal Upstairs) is a reference to this particular beta footage.
 * (v0.9, night time) If you enter Plexal Upstairs via Plexal Hallway at night, the music will use the "night music box" instrument set, this persists when entering Beta Lobby B.