Exactly what I thought when I saw the title. Let me add some more:
what was my thread not good enough for you?
Killing Adventure by Ruba. Really strange levels/ideas, try it if you like interesting concepts made by a "newbie".
Fragport by Stephen Clark, especially MAP31: Crystal Maze. Based in a 90's TV show, it's a large and confusing maze. Not for everyone, but still cool.
The Community Chest Series, various authors. Some unique maps in here, especially MAP20: Technodrome, from CC1 and MAP31: Disarming the Mechanism, from CC3 (timed levels, very clever); MAP32: Installation 07 Warzawa, from CC3 (I don't know why, but I always thought this level was really strange); MAP29: Citadel at the Edge of Eternity, from CC1 (Magikal maps were always incredible, and this is the best one IMO).
MAP06: Triplet, from The Enigma Episode by Jim Flynn and MAP08: Triplet 2, from Reverie by Valkirifroce. Hub-like levels, the latter being a tribute to the original by Mr. Flynn.
MAP31: Killer Colours, from Alien Vendetta. Relatively hard level with great visuals. The super-secret exit room is particularly attractive if you ask me.
Survive in Hell, by JC, especially the two secret levels, based on Tron apparently.
I'll add more when I remember them.
EDIT: I don't know how I could forget these ones:
Quo Vadis, by Gurkha Boy.
There's also a wad based on the Doom Comic, replacing E1M1. File size is 175,403 bytes. I can't find the link, basically because I have the bad habit of changing the file's names.
Brian 50 Super Secret Level by a dude called Evil Space Tomato, 50 secrets (can you find them all?), MAP32: The Super Secret Level, from Doom II Reloaded, by Andy Stewart. Similar to Brian 50, but higher quality. Also, MAP18: Warehouse Siege, from the same megawad. "Forced pacifist", quite hard, at least for me.
OK, I should stop now, or I'm gonna spend the rest of the day looking for unique levels... and there are dozens out there.
Dark Side of the Mind, by Daniel "Stormin" Norman, The Waterfront, by Scott F. Crank, Requiem MAP23: Hatred, Icarus: Alien Vanguard, MAP24: The Haunting, Hell Revealed MAP26: Afterlife, Plutonia 2, MAP32: Go 4 It, Eternal Doom, MAP25: Beginner's End, Reverie (yes, again), MAP18: Sleeping Spirits, and Project X, by Cyb, MAP14: Ghost Town. All of these based in the Ghost Monsters' bug.
OK, that's it. I won't post more... for now.
Last edited by Zed on Nov 24 2013 at 20:33