1983 by Flying Lotus
It's not a game soundtrack but it could well be. Reminds me of the Transistor and FTL OSTs.
It features lots of sci-fi/futuristic sounding elements and the mood is very chill – the perfect background music for exploration in a space setting.
If you don't have the time to listen to whole OSTs, here are some tracks from different games that stood out to me:
Prince of Persia: The Two Thrones – MiddleTower / Upper Towerhttps://www.youtube.com/watch?v=2zDPr8mcMmY
Risen 2 – Outdoor
TLOZ Skyward Sword - Lanayru Mining Facilities
Grim Fandango - Companeros
