What is the most over-the-top wildest D&D campaign you've been in?

[Evilhalfling]

Halflings in Space - a full party of 2e halflings with a spelljammer ship shaped like a Swan.
The Thief had a 98% of pick pockets, which he used at every oppertunity to answer the question "what has it got in its pocketssesss?" he never kept anything, and always returned it after checking.
The Fighter had girdle of Gaint Strength - and got extra xp for drawing the monsters he killed on his charater sheet.
A gaint space hampster, monk. cheeks were enchanted to function as bags of holding.


After at least 5 sessions, the characters ended up harvesting a astroid meterorite iron to forge hundreds of magic weapons from. It was 4am and I fell asleep after telling one of them "Shut up! a giant blue smurf eats your character"

it was in my sig for a while...

 

[AdmundfortGeographer]

In 2nd ed, the party was told to come up with some non-evil monster. The party was filled with a fairy dragon, mongrelman, minotaur, kenku, other bizarre non-humans.

The DM didn't like that there was no normal PC race so as PCs died out they were replaced with PHB races.

That said, the adventuring was totally gonzo. It culminated with the party being carried around by squadrons of dragons while we dropped bundles of Staffs of Power on enemy armies like daisy cutters. The Staff of Power in 2e, when shattered, would result in a retributive blast. BOOM!

When the Staff of Power is nothing but . . . ammunition . . . you know things are over-the-top.

 

[David Howery]

I went a little Spelljammer crazy back in 2E days, and designed my own Crystal Sphere that had only a huge asteroid field in it; basically, every race in the setting was there, and all of them were fighting all the others for control of various asteroids. I designed several of my own ships, including a 'Narwhal' that had a big drilling horn on the front of it. I had the Neogi in it, but decided they were too dull, and designed stats for the monsters from Predator and Aliens and tossed them into the mix as well. IIRC, when we all started getting tired of it, I made a grand finale adventure that had the Aliens take over everything, and the Predators chasing the PCs out of the sphere...