It's a shame because I know a lot of folks have a real love of the original Marathon games and always held out hope Bungie would do a singleplayer FPS again, but might I suggest checking out Supplice? It was inspired by the OG Marathon and has a demo:
https://store.steampowered.com/app/1693280/Supplice/
https://store.steampowered.com/app/1693280/Supplice/
Comments
Whole soundtrack (AND GAME) sooooo gooooooood
https://www.youtube.com/watch?v=0S9YEviWk5c
It goes way more proggy and synthy than your usual retro FPS games, which I do honestly love, but this is just something else.
https://www.youtube.com/watch?v=L3f7ciVwxkM
The levels are the perfect balance of gameplay focused abstraction and recognizable locations, but my favorite part is learning the stories of these doomed characters bit by bit through each episode.
I’ll have to give this a look.
Goddamnit :D