Board Thread:Geometry Dash Gameplay Discussion/@comment-26364254-20150503164230/@comment-25769875-20151231125432

Probably not Demon, but it should rate 13 stars. Anyway this is what I personally think the order is from easiest to hardest:

Stereo Madness

Back On Track

Polargeist

Base After Base

Dry Out

Can't Let Go

Jumper

Cycles

Time Machine

xStep

Blast Processing

Clutterfunk

Electroman Adventures

Geometrical Dominator

Theory Of Everything

Hexagon Force

Electrodynamix

Theory Of Everything 2

Clubstep

Deadlocked