More gaming music

I just downloaded the Session 9 soundtrack and it's absolutely eerie. If you need music for a scene where you want the characters/players to be on edge, to expect something awful to happen at any moment, then this music will help you create that mood.
If you haven't seen the movie, I can only recommend it. It has its weaknesses, but the location alone is worth watching it: Davers State Mental Hospital

You can take a look inside on this website, it's beyond creepy. It probably was the inspiration for Lovecraft's Arkham Sanitarium, which in turn inspired Arkham Asylum.

Another discovery, via Bad Astronomy, is the website Experience the Planets. You can listen to the full album right there on the website or download it here (or on iTunes, but then you're missing Pluto). Great atmospheric music. Not necessarily for action-packed scenes and fights, but scenes where the characters explore a stranded spaceship or a lost city come to my mind.