Any good fps games? (Besides the popular AAA titles)

Not sure if you'd consider Metro triple A or not, but if you haven't played that yet you absolutely need to check it out. There's also a pretty chill indie-style game on Steam called Jalopy. You essentially just build a car and have to keep it running to drive a really long distance.

Here's a list of some more quality FPS games:
- The Forest
- Both Titanfall games (I'd consider these not to be AAA)
- Superhot