Board Thread:Geometry Dash Update Discussion/@comment-27281130-20151215191226/@comment-5645428-20170223133640

I agree with all those difficulty ratings, with the exception of Electroman Adventures, which should also be rated Harder. Stars have gradually fallen out of sync with each other as levels were added, making updating allocations too drastic to change.

I think there is one too many difficulty ratings right now, such that a level can often be considered a harder version of an easier rating or an easier version of a harder rating. I would design stars to correspond to revised difficulties as follows:
 * Unrated: 0 stars
 * Auto: 1 star
 * Easy: 2-3 stars
 * Medium: 4-5 stars
 * Hard: 6-7 stars
 * Extreme: 8-9 stars
 * Impossible: 10 stars

Here is how I would more accurately rate levels:
 * Stereo Madness: Easy, 2 stars
 * Back On Track: Easy, 2 stars
 * Polargeist: Easy, 3 stars
 * Dry Out: Medium, 4 stars
 * Base After Base: Medium, 4 stars
 * Can't Let Go: Medium, 5 stars
 * Jumper: Medium, 5 stars
 * Time Machine: Hard, 6 stars
 * Cycles: Hard, 6 stars
 * xStep: Hard, 6 stars
 * Clutterfunk: Extreme, 8 stars
 * Theory of Everything: Hard, 6 stars
 * Electroman Adventures: Hard, 7 stars
 * Clubstep: Extreme, 9 stars
 * Electrodynamix: Extreme, 9 stars
 * Hexagon Force: Extreme, 8 stars
 * Blast Processing: Medium, 5 stars
 * Theory of Everything 2: Impossible, 10 stars
 * Geometrical Dominator: Hard, 7 stars
 * Deadlocked: Impossible, 10 stars
 * Fingerdash: Hard, 7 stars