Define Extreme Demon Meaning

A difficult platforming challenge that brings the bearer great pain until they manage to beat it. Then it feels gooooooood

The hardest difficulty of levels in the game Geometry Dash, which is easier than only Impossible. These levels can take thousands of attempts for the most skilled players. These levels involve straight flying or flying through tight spaces, frame-perfect timings, stretched triple spikes, or sometimes level obfuscation or memorization. Sometimes, high framerate monitors are needed to complete these.

The hardest level difficulty in geometry Dash. The extreme demons are really hard and a only 1% of players have finished them without hacks. Example : bloodbath.