Pretty much the entire Castlevania : Symphony of the night soundtrack... It's all so good. And nostalgic too. One of my favorite games, and favorite soundtracks.

Sonic Mania - Hydrocity Zone Act 2

90% of the Sonic Frontiers "Cyberspace" tracks are S tier. The best soundtrack in recent memory.

Personally, Quake (1996). I remember playing it as a teen and actually feeling my heart rate increase with the music. It was the first game that the music really immersed me into the game.

Honorable mention, The Housebuilding Song from RDR2. Just a perfect way to lighten the mood after such a hard hitting chapter.

Almost all Deus Ex soundtrack, and maybe the Synapse level was the best of them.

I’ll add two of my favourites that haven’t been mentioned yet - Metroid Prime is my all time favourite and Horizon: Zero Dawn and Forbidden West which I’ve been listening to a ton late lately

Right now I'm going to have to go with a tie between Brok and Graff from Brok the Investigator and the legacy soundtrack piece After The Flames by Josh Woodward from SuperTuxKart.

I love listening to Rimworlds OST and Hotline Miamis soundtrack.

Okami has a truly beautiful soundtrack, my favourites are the 'The Sun Rises' and The Eight Dog Warriors Theme'. Also Calamari Inkantation from Splatoon is fantastic.

Jet Set Radio Jet Set Radio Future Bombrush Cyberfunk

You just have to understand the concept of love!

Halo is my top pick.

Goldrunner was also fantastic in its way.

I'm surprised that no one mentioned the Metal Gear Solid series. The music was incredible, and it's got one of the most memorable songs in Snake Eater. I'm also a big fan of Can't Say Goodbye to Yesterday .

Just one track? The Requiem of Shield Knight from Shovel Knight.

Tenchu: Stealth Assassins

The original Destiny sound track was fire

I played a beautiful game last year called Omno, and the soundtrack to that was just breathtaking. I listen to it all the time

Tunic has an otherworldly soundtrack. It's perfect music to listen to while working. https://youtu.be/nnvjKf_mRYM

I'm going to give honorable mention to Buck Bumble on the N64.

I remember basically nothing about the game, or even if it was any good, but I rented it once at blockbuster and like 2 decades later the theme song still pops into my head once in a while.

https://m.youtube.com/watch?v=33ZP8_aAdNI

Kenshi has some of the best ambient music. Scorching wind gives chills every time.

A few i havent seen mentioned.

Sonic 2 and 3 on megadrive. Especially the ice zone with the snowboard on 3. https://youtu.be/hYxlqTpZ-24

Icewind dale. The kuldahar music is epic. https://youtu.be/B92P1-OUNJo or easthaven in peace https://youtu.be/ERd5stTsaBc