The Floating Lands:
In this world The Gods have seemingly left the world a broken place, leaving behind powerful ghosts and messengers and avatars in their absence, communicating and granting mysterious powers to their devout followers. With the world hollow and land floating in the open sky, continents and islands drift in the clouds, the only way between is via airship or harnessed airfish. Magnetic crystals called Lodestones are buried throughout the lands and infuse the world and the life within it with bizzare resonating frequencies which equate to what would be known as magic in other worlds, but these harmonics can be studied and mastered by Wizards, or utilized naturally through Sorcerers, or even activated and manipulated through the frequency modulation called music. Concentrated Lode Gems are what hold the lands in the sky, and overmining these resources can collapse a whole continent, as happened to the fabled Lost Continent of Baltimis. The bitter ongoing feud between the brilliant if impractical Gnuma (Gnomes), the Lode-infused remnants of a high society Eldar (Elves) and the stubborn old-fashioned master craftsmen who live in the ground, the Delven (Dwarves) is over who was responsible for the literal collapse of the technologically advanced society. The only proof there is that Baltimis ever actually existed is the Gnuma-matics (Gnumatics), a race of intelligent machine men and lesser creatures that would not be considered alive by biologic standards. While modern Gnuma are clever, and can use the properties of the lodestones to craft many wondrous and ingenious devices in their smog belching factory cities, crafting something self aware seems well outside their abilities, try though they might. Lesser of these self-propagating Gnumatics have made a nuisance of themselves by replicating all over the world, taking different forms as need dictates, and mindlessly going about their collecting resources as the blind imperatives instruct them, regardless of innocent bystanders. Cult of lifiists abhor their very existence and seek the frequencies that can shut their machine brains down, and (rudely so called) mechromancers rejoice in their otherness and variability.
That more or less sums up the world, lets roll up some dudes (or dudettes, no shame genderswapping at my table) and run around in this thing.