PCs must make their way to the bottom of the Temple of Chaos, but first must find the three componants to the key hidden throughout the temple. Just a basic dungeon puzzle really. The fun part is that every time a PC walks through any door, they have to role on the Insane Jester's List of Chaotic Effects.
The last time I ran this setting, the Archer turned into a purple-slug-bodied hydrophobe, the rogue turned into a solid gold automoton, the male fighter became a female elf named "Dingus," and the wizard spilt into his good and evil halves (only one was weightless and had to be carried on a string).
We've never laughed so hard in a session.
Ravilah