There's an Aztec city building game called Tlatoani. It's in early access, but has enough meat on the bone that it's one of my goto games.
Out of curiosity I checked Steam DB for active player numbers. I have discovered at any given point I am 10% to 25% of the given player base BY MYSELF. I am 1 of 4 people playing this game right now in the world. With the prevalence of the internet I always assume whatever weird bullshit you're into there's at least a thousand people talking about it; making memes outsiders could never comprehend. It's actually novel to fly under the radar for once.
What do you do that doesn't have a community associated with it?
Earlier this year I tried out a Steam demo of a game called "That Time I Found a Box" and got hooked on it. It's a very unique card game where you create and enhance the cards as you play. I played it for days and eventually beat the demo - the devs told me I was the first person to beat it.
The full version just came out on Steam - I'd recommend taking a look. It's a bit janky and not for everybody, but it does something unique that really clicked for me.