While not as epic as The Broken Earth trilogy, this N.K Jemisin series goes very deep into the nature of power, religion, divinity, and so many other things, in a series that's mostly just characters talking to each other and thinking thoughts. There's a revolution against Light and Order (which, it turns out, are pretty authoritarian things when taken to the extreme). There's dismantling of good-evil binaries. There's a LOT of queer sex. Brilliant.