Count_Arioch_the_28th at [unixtime wrote:1192400419[/unixtime]]I really liked Spelljammer.
/ducks
They had giant hamsters.
While I was a fan of vanilla Planescape for a while, and for a longer duration, a fan of
heavily modified Planescape, the ones that will always have a special place in my heart next to my girlfriend and pav bhaji are some (house-ruled) Dark Sun and Forgotten Realms as well as a small slab continent and archipelago chain of some obscure world my brother, a close friend, and my own making.
When this custom setting of ours was agreed as 'too cartoony', as it had been in existence for about 8 years (or let's just say it was old enough for AD&D 2e up through to 3.5e) I pushed for an Undead Apocalypse.
You know, when the rate of corporeal undead outgrows the capability of the living to destroy them.
And given that it was a "godless world" run by powerful regional spirits and they were bound by rules set upon them by uncaring remote beings (as in, can't step in personally to fix things), eventually it became desolate and ruined, rolled up like a scroll, and ended with a whimper.
I seriously wish more failed settings would do same.