Ok I've been watching this thread for a while, but didn't have the motivation to write anything. Then I saw frequent visitor.

frequent visitor: this level is fucking awesome. I found this level one day while perusing R3XX3R's catalog and it instantly became one of my favorite R3XX3R levels. Despite being so simple, this level is able to create very distinct environments through subtle things like height, color, and gameplay. These distinct areas masterfully match the vibe of the song.

Bicycle: Interesting pick! The gameplay is quite obtuse as many levels were back then, but I admire the amount of simplicity this level has. No structure goes to waste. It is either there to trick you, or help you in some way.

Escape from Castle: This one is quite a level. I'm ngl, I don't like it very much, but I can acknowledge the childlike whimsy that probably went into the creating process.

My top 3:

1. Cold Sweat by Para

2. Lit Fuse by Krmal

3. Interlude by Wiktord