Hello! I'm not sure if my game classifies as niche or not, but my game is a first-person walking simulator where you must find notes scattered around an abandoned alien base and solve the mystery of what happened there, all while you make your way to the exit. Here is the link to my game if that sounds interesting to you:
Goodnight, Moon: https://itch.io/jam/jamsepticeye/rate/3937870
I will make sure to check out your game as well and leave a rating and comment 😊