First things first, me and my dad had to quit our D&D group due to a multitude of things beyond anyone's control.
I offered to DM a home-game for my dad and he happily accepted, even created a party of adventurers consisting of a Barbarian, Rogue, Druid, and Wizard.
What's so special about my setting?
It consists of two inhabited planets orbiting the same sun.
The first planet (and the one closest to the sun) is basically Dark Sun without psionics.
It is a desolate, sunburnt world where everything is crumbling into dust beneath a sky poisoned by sorcery.
The dwarves claim descent from the now-extinct duergar.
Town guards are often corrupt.
Everyone is terrified of the mage-Kings and their sorcerous agents, the Templars.
Yuan-Ti cults perform human sacrifices, collect the blood of their victims, and reanimate the fluid as "Blood Oozes" to fight for them.
Bloodthirsty gnolls prowl the wasteland alongside their allies: the horned Minotaurs and the skeletal Babau.
What very, very little remains of the Underdark is controlled by the grimlocks, trolls, and their hideously mutated masters the Fomorians.
City-state slave soldiers charge into battle alongside noblemen riding bulettes, while tamed dragons swoop overhead offering air support (the closest my dad's PCs have yet come to a TPK was against such an army disguised as a band of desert nomads. It was an INTENSE fight).
Halflings claim descent from the now-extinct wood elves, and yes, those of evil alignment are notorious for cannibalism.
You can be a Sea Elf here. The cultural history goes that your people fled the oceans after the waters became too acidic, and as the oceans have now mostly evaporated, your people wander the desert, although you are a bit more magically-inclined than the other sub-races of elves.
^this is the place my dad is currently adventuring, and he is really enjoying it. He LOVES how it is such a bleak, seemingly hopeless world.
The second planet is currently experiencing a global ice age so intense that everyone has fled to the Underdark to stay warm.
I'm still working on this planet, so it isn't quite as detailed as the first one.