For explorations of the lost worlds and dark corners of The Wired check out Vinesauce. There's something about those old web games that give you such dread.
There is a Team Fortress Classic Server that I go on when I notice it's populated. It only runs really long custom adventure maps, no normal TFC gamemodes like ctf and deathmatch.
There is a series of (around) 7 maps based on the smurfs that make up an incredibly difficult 6-10 hour long multiplayer platforming/puzzle-solving adventure (when played in order). The goal is to locate and save smart Smurf.
One night I decided to hop on and play on this server Just as they had started the first level. I still have never managed to beat this series of levels all the way through.
Anyway, in the first level, you are given the task of locating a map that will lead you on the path to finding the smart smurf. After we found the map, a gate to the next area opens.
I was about to walk through the gate when a guy I was playing with stops me. He asks me to follow him. He lead me back to the village and inside a smurf house that was originally locked, but after finding the map, it opens, revealing an easter egg.
Inside of the cozy mushroom hut was two chairs and a radio on a table, all being illuminated by a fireplace that was emitting a soft, highly compressed crackling sound like an old mp3.
Activating the radio would play the entirety of Kansas's Dust in the Wind. It was very compressed because the map was made in like 2006.
The dude who showed me this secret told me he often comes to the same room in the same level regularly. He said it helps him remember.
I had never seen this secret before, even after playing on this map several times. I always loved the detail, secrets, and humor that went into old custom goldsource maps.
I stood there and listened to the entirety of Dust in the wind with the guy. He told me "thanks for listening" and we went on with the adventure.
So fucking bizarre.