are they also australian, like drow normally are?The Over Under - World where the Dwarves live aboveground and are kind of messed up because in ancient times they were driven out of the underdark by an invasion of the Mindflayers and their (at that time) Githyanki minions. (in what is intended as a parody of the underground society from GRRM's Dying of the Light)
Multiple small suns over one planet? I rather like that idea. Each sun gets a different personality. Some are dead. Or missing.Polysol - Crystal sphere with no large central sun, necessitating lots of Apollo style solar chariots (or Ra style solar barges) that each serves its own locality about the size of a US state. Potentially the time of day, length of the day, and the direction of the sun's travel may vary between regions in an unsynchronized way. (Edit: alternately they could be perfectly synchronized and with a simgle sun god controlling all of them, in parodic contrast to D&D's usual nonsensical situation of multiple non-collaborating sun gods but just one sun)

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.