It's a shame Phrixothrix went unnoticed, despite the big boom of the "rustcore" indie horror games about ancient bunkers, paranoia and subtle terror.

Because this game is all of that distilled into the dark (like, actually pitch black) underground network of tunnels from the perspective of a person trying to escape using a small (bio?)mechanical worm.
There's no text, nor straightforward hints. Confusing, claustrophobic mazes of rusty old corridors are hard to navigate and sometimes everything just feels frustrating. But despite all the problems, i think you should try and give Phrixothrix a chance. Maybe you might even beat it, unlike me.