@InspectorCaracal (it does! it's kind of sparse in among the grinding but i think it's fascinating.)
another fascinating oddball - i think it's now actually abandoned, but if you want some fantasy-world-without-medieval-influence, http://zerosummer.storynexus.com/ is AMAZING. really fascinatingly written. an oddball, but worth it. it uses the same engine as fallen london, so very easy to just have it in a browser tab and play a little bit when your energy refills, etc.
@InspectorCaracal Dr. Langeskov, The Tiger, and The Terribly Cursed Emerald is free, short, and kind of hilarious if you want a hilariously meta detour into video game stories.
Emerald City Confidential is one i'm going to toss in here as representative of the modern point and click adventure games. but that's a huge untapped resource. Wadjet Eye games has a lineup that i haven't actually played yet, but you might really enjoy - Gemini Rue is sci-fi iirc, and new stuff besides.
@InspectorCaracal more bits as i comb through my steam list...
Analogue: A Hate Story. really interesting presentation. gets heavy in a way that definitely sneaks up on you to stab a dagger in your back.
BASTION. if you wanted to include Transistor for science-fantasy that is also good, but Bastion is really one of those "if you haven't played this yet What Are You Doing" ones.
Dishonored/Dishonored 2 i think serve up an interesting and unique world as well.