What is this art style?

https://youtu.be/Vn_IvCLU2AA?si=zai5juDWxQeKWlao

Does this art style have a name and are there old like PSX era games that looked like this (PSX was a bit before my time)? Or is this a modern style with a "retro" aesthetic that never really existed. I really like it and want to learn more about it, I've seen a couple other indie games like this, with the first person low fps animations and pixelated look, but I can't remember them off the top of my head.