Not sure if it counts as chill but I am obsessed with it since the moment Hyperfunk trailer dropped and I will blow up if I don’t tell yall about it:
I do also recommend entire soundtrack and game Bomb Rush Cyberfunk (Hyperfunk prequel) as well though, it’s gold.
Recently discovered that Top Player’s Golf has some really sweet chill tunes 
Delighted to see the work of Amos Roddy on Citizen Sleeper here :)) it’s such a huge part of the game i want to cry when i here the songs.
I’ll add his work on the Kingdom games OST:
I’m amazed to see how close it is to the CS OST. Kinda incredible to be able to create musics that fit medieval loneliness as well as space station loneliness
I will be listening to this playlist religiously 
Fishing games have some unreasonably chill tunes
Big fan of this snowy track from Jak and Daxter https://youtu.be/qp6Mr4hLfuY?si=SyA7hgisjQYwR40d
Let’s Get Forked Up is a vibe and a half. Wish Demon Turf’s OST had vocal mixing in the tracks as good as the hub theme, but they nailed it on the most important track.
Also want to give a shout out to the soundtrack for Didnapper 2. It’s a fairly tame damsel in distress fetish JRPG that got so much patreon backing that they were able to hire a very talented composer to make pretty massive soundtrack filled with town and event themes. This piece from the chapter rest moments at Inns when you can speak with your party really stuck out to me as especially mellow.
This is actually fucking great 
looooove a good snowy track!
The entire OST is genuinely jaw-dropping, but right at the start of WotR you get a brief pause from the action and this plays:
Criminally, it only plays once!
And of course, we’ve all heard Besaid Island:
It’s a sin lol that most of us heard the FFX soundtrack on a little monospeaker on a small CRT because it really was a whole new era for game soundtracks
The FFX soundtrack is far too good for us mortals. Not a single bad track in it 
If I can suggest one…
I’ve seen this game a few times and aesthetically it’s always been looking really great, but this music is also just peak.
It’s fantastic, one of the best 3D platformers out there today. The team are also making that new Bubsy game that actually looks good, amusingly enough.
How about this one?
DAMN. I’m hooked 
Some chill tracks for this wild Wednesday
This is unreasonably good
If you want something a tad moodier but still chill, highly recommend the Footfall and occupied junk ship theme from Rogue Trader. Favorite bit is that it transitions into a downbeat shanty chant.
