The portal 2 soundtrack is an absolute banger
Any Supergiant game
Hades, hollow knight, ck2
celeste
Every single track is a banger
Don't know your taste but I love the soundtrack to Hardspace: Shipbreaker. I'm not great with genres but it's mostly instrumental folk. It's in that sweet spot where it can serve as ambient or active listening.
Risk of rain 2, frostpunk.
When you buy Risk of Rain 2, you're buying a soundtrack with a free game alongside it.
Divinity: Original Sin 2 - Has really nice "chill" sound track, sorta old timey
Bastion
Hades
Warhammer 40k: Mechanicus, if you wanna get really wild
The same guy that did Warhammer 40k: Mechanicus also did IXION.
Dead Cells has a great soundtrack
I love me some Endless Space 2.
The Forest has an awesome soundtrack, but the complete edition is on creator's youtube channel.
PPPPPP the VVVVVV soundtrack. Such a jam
Probably doesn't count... Streets of Rage 2 (listening to it right now)
Is the soundtrack on steam? That's pretty cool i love chiptune music.
The game surprisingly is on Steam and it's quite cheap, but no soundtrack is listed on the store page
Rebel Galaxy. You can't buy the soundtrack separately the music is downloaded as audio files when you install the game. I think the genre is more towards Country Rock. Very interesting and I really enjoyed it.
The Long Dark soundtrack is absolutely goated
Tetris Effect has a great soundtrack
oh yah connected is fire
Furi, no mans sky, hyper light drifter, doom eternal and sable are my favorites
the furi ost is an amazing collage of french electornic music.
Steam
Steam is a video game digital distribution service by Valve.
Steam News | Steam Beta Client news
Useful tools:
SteamDB
SteamCharts
Issue tracker for Linux version of Steam