The Metro trilogy (so far) was on a sale a couple weeks ago. Beat 2033 Redux and am on Last Light Redux now. Good stuff!
Most people probably know about it, but for those that don't, it's a story driven FPS with a mix of chaotic combat and stealth sections. The story is decent, and the gameplay is satisfying. I played the first one with a QOL modpack and the second unmodded.
Redux versions I believe have upgraded graphics, gameplay tweaks to make the game more approachable, and integrates content from expansions into the story. Don't quote me on that though.
Recommended.