Rating Curve

Possibly one of the greatest names in the Demonlist, Farbidi Theory by TMco is a level verified by WatchPiggy and has unique gameplay elements and a 1.9 based (but not purely) decoration style.

It has the structure of Theory of Everything, but doesn't exactly play like it (it's a top 150 lol ofc its not gonna be ToE). The gameplay is timings based, and mostly enjoyable if you're into that. It also has hard UFO parts, something not usually present in extremes today, as well as a little bit of memory, but not too much that you cannot figure anything out. In my experience, there are also some chokepoints throughout the level, but nothing too serious. Overall the gameplay is extremely challenging but fun to play most of the time.

The decoration is also pretty good, having a solid theme and sticking to it throughout the entire level solidly. Not much to say here, just a good 1.9 based deco with 2.2 sprinkled in.

This level is mostly extremely fun with nothing bringing it down significantly in both the gameplay and decoration department, so if you want a challenging low list starter to play, I'd probably recommend this one!

One of the most impactful levels in the history of Geometry Dash, Sonic Wave by Sunix is a 1.9/2.0 Nine Circles level that was hack verified but later reverified legitimately by Sunix. However, despite the everlasting effect on Geometry Dash as a whole, it kind of falls flat in some aspects.

Being a Nine Circles level, it's not exactly that unique, however it has a somewhat unique gameplay structure that isn't cube -> ship -> ball -> wave -> last cube, but instead is an XL that uses most of the song. The decoration is what you would expect from a Nine Circles level, but it is still slightly empty regardless.

Besides the decoration, the gameplay is not exactly enjoyable, having some major chokepoints throughout the level. However, it still is somehow enjoyable? No idea how, but if you enjoy wave, you will probably enjoy Sonic Wave.

Overall, an okay level, and is far from being abhorrent! If you want a good wave based level, playing this isn't a bad option.

Aftermath is just Cataclysm but harder and a cool looking ending. The gameplay is abhorrent in some places but overall bearable, and the decoration is just ripped off from Cataclysm. The only part that isn't is the ending, with a cool background and surprisingly not ripped from Cata. The whole level feels kind of like the creator made the ending when they were bored, and then wanted to make a full level out of it but didn't know what to add, so they just made buffed, slightly different Cata. Overall bland and "okay" to play.

Removed Submission by WHErwin is a very unique level, from the gameplay to the theme to the song. It executes a theme incredibly well and uniquely, being Newgrounds, and accompanies it with exceptional timing gameplay (except the 'spam' part lmao). The only parts of the gameplay I would say is bad are the blind clicks in orbs, but otherwise great. It comes off as janky and weird to some, but over time after playing it it becomes incredibly fun and never seems to get old.

An extremely underappreciated level by many, Moving Forward by crohn44 is his last project and in my opinion the best. A lot of people think that this level is abhorrent to play. However, I extremely disagree. There are many different ways to play Moving Forward, unconventional for many levels, but it makes it extremely fun to find your own way to beat the level. Some paths are easier or harder, but you can choose which way to go that fits your playstyle. On top of that, it has an amazing song that I think never grows old, as well as outstanding deco from crohn44. This is a great finishing level and I wish crohn the best in the future!

Hopping Over Puddles is an outstanding level with a great theme, gameplay, and song. J27Blaze is an amazing creator with extreme talent, and this solo proves it. The backgrounds are outstanding, with synced but challenging gameplay, as you traverse a landscape with exceptional deco and song. Everything about this level is a masterpiece, and I do not regret anything about this being my first extreme demon.

"Sank" by Waterbound is a very unique level as it was the hardest extreme that was only cube (and then every end came out lmao), This level has phenomenal gameplay inspired from Dump. This guy better make another solo,,,, The decoration is also amazing as it is built around the underwater theme, and the pulses, movement, and polishing all help to tie it together.

This level is extremely fun to play. Many elements of the level make it so that it is difficult but not extremely challenging. The visuals are also great for 1.9.