Specifically KrMal levels
I think everyone remembers this level due to it's strange vibe and eerily realistic... antagonist? Protagonist?
What is Hungry Humphrey?
This creator said "DUDE WHAT THE F-" before slamming their desk after dying at 98% while verifying Bloodlust.
Who is Knobbleboy?
This is the first Hard rated official level.
What is Dry Out?
Most recent tab levels have this song, due to it being the default if left unchanged.
What is Stereo Madness?
This is one of the most iconic extreme demons in Geometry Dash, and yes, it was a top 1 at one point. It was verified by Riot.
What is Bloodbath?
This level is just barely an extreme demon, and also uses Time Leaper as its song.
What is Falling Up?
The Wave gamemode was originally called this.
What is The Dart?
This is the 7th official level in Geometry Dash.
What is Jumper?
What is At The Speed of Light?
This is the current Top 1.
What is Tidal Wave?
This level's main difficulty comes from its incredibly hard asymmetrical duos throughout its drop.
What is Black Blizzard?
Name an extreme demon which name is only one letter.
Answer may vary.
This is the shortest official level in Geometry Dash.
What is Cycles?
This is the music used in The Nightmare.
What is Polargeist?
This Top 1 was previously considered unbeatable, but was verified several years, and even updates, after it was created.
What is Silent Clubstep?
This KrMal level was controversial for some reason? I'm not bothering to look into it, but it's an inversion of the name of a separate popular level.
What is Low Death?
In an early Geometry Dash trailer, there was a level named this. The typo can be included but it is not necessary for the answer.
What is Ultiate/Ultimate Destruction?
This is the phrase that is shown in text before the infamous straight flying ship in deadlocked.
What is "I like this part :)"
The song used in Yatagarasu DOES have that in its name, but this is the full name.
What is The Flawless Wings of Yatagarasu
Most people dislike this Top 1 due to it's soulless creation and fixed hitboxes.
What is Avernus?
KrMal made this level as a sort of contradiction with popular levels. It has slow, repetitive gameplay, but then gets incredibly difficult during the drop.
What is Lit Fuse?
This is the creator that said the following quote: "Dude, Chick-Fil-A would be like S-Tier fast food if they didn't hate gay people."
Who is Npesta?
Explorers will be the latest official level when it is released in 2.21. This is the creator who made the song used in it, who also made Time Leaper.
Who is HinKik?
A song was created specifically for this level, with the song and level sharing the name. It tries to convince you to jump, when you only need to do it once throughout the whole level.
What is "The Spike is Over There?"
This Top 1 uses Creo - Sphere as its song.
What is Zodiac?