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Message from goofuslang: Anyone can add their own things to The Museum in empty exhibits.
The Museum is a non-level space of the Progressiverooms, which of course, resembles a simple museum with many different rooms and floors.
This is the floor you enter from; you first see displays of the following from left to right:
A demonstration of the Kissing Number problem.
A self-playing drum set.
A life-sized door spring.
A reference of the game Squirrel Stapler, dead squirrels stapled on the wall.
A random Markiplier video playing and shuffling after it ends.
A demonstration of the first human voice.
A graph showing the origins of Gen Alpha Slang.
A really complicated lock pattern.
Going up the stairs leads to Floor 2, and beside the stairs is a door made of glass, which entered leads to the achievement room.
The stairs on thsi floor goes either up or down, from Floor 1 to Floor 3. The displays here show the following:
A demonstration of the BIG FOOT number.
A zooming video of the Mandelbrot set.
A living Lucario.
A demonstration of the Ant on a stretching rope math puzzle.
An interactable implementation of the 30-dollar haircut website.
A screen playing Will Smith eating Spaghetti.
A glitched object that leads to Level 190.
An exhibit with Oculom within it.
This is the last floor, and has empty displays, which might be added in the future.
A screen displaying a video that demonstrates the process by which you might engage in cannibalism https://www.youtube.com/watch?v=TFbsgbu4WjY
This thing https://www.youtube.com/watch?v=pixBKxFndPg&list=WL&index=25&t=55s
An exhibit that can be entered via a glass door, which has a tunnel that can be entered to go to Level 290.
The achievement room is a room where certain level achievements can be obtained, currently there are only two exhibits that can be possible here:
An exhibit with a cup of coffee, forever heated, emphasizing on the same cup of coffee held by Entity 122 - Kohi in Level 199. This is obtained after reaching Level 200.
An exhibit with a camera pierced by a pike, which emphasizes on the same camera used by Entity 142 - The Viewer, the first entity encountered in the Experiment levels. This is obtained after exiting Null_End, which these levels require entering Level 200 at least once.
An exhibit holding a fresh footlong Subway Sandwich. You can obtain this through completing the now irrelevant The Trail of Tears. You may not eat it though.
An exhibit with a statue of lamb sauce, which is obtained from finishing all 8 mazes of Maze with Gordon Ramsay at least once.
Sleep in the Monochrome Girl's bed on the Third Floor of Level 175.
Level 0 →Level 1 →Level 2 →Level 3 →Level 4 →Level 5 → Level 21 → Level 33 → Level 39 → Level 40 → Level 138 → goofuslang's division → Level 175 → The Museum
Level 0 → The Club → Rio's Nexus → Hell → goofuslang's division → Level 175 → The Museum
Level 0 → Pseudo-Level 0 → Level 205 → Level 175 → The Museum
goofuslang (Proxied by Jacob Lee)
Potassium
65536 (Proxied by Jordan K)
Cinnimin
Jacob Lee
katastrophe (Proxied by Jacob Lee)
nick (Proxied by Jacob Lee)