Hi, Doomworld!
I'm a Swedish composer making music for indie games and I've made a bunch of tracks inspired by retro shooters. The playlist also features tracks I made for Penance, an oldschool style FPS with a campaign mode with hand made levels, and an endless mode with procedurally generated levels covered in gritty retro graphics.
You can play Penance here https://akselmo.itch.io/penance