Helix

While it's not technically a video game, I would recommend the Homestuck Soundtrack. You probably already have a vague idea of what Homestuck is, as it was pretty prevalent a few years ago and still has a large following if you know where to look. I would also recommend reading the comic, but it's stupid long and kind of hard to get into for most people, so I wouldn't say it's a requirement. The soundtrack was made by Toby Fox, the same guy who made Undertale & its soundtrack. All the albums are available on Sound Cloud; but there are so many that it would cost over $100 if you were to buy all of them, so I recommend only getting a few or just pirating them. Even if neither of those options strike your fancy, they're still definitely worth a listen. Specific albums I would recommend are Cherubim, Strife, and Symphony Impossible to Play http://homestuck.bandcamp.com/album/cherubim http://homestuck.bandcamp.com/album/strife http://homestuck.bandcamp.com/album/symphony-impossible-to-play Specific tracks I would recommend are Cascade, The Carnival, and MeGeLoVania. http://homestuck.bandcamp.com/track/cascade http://homestuck.bandcamp.com/track/the-carnival http://homestuck.bandcamp.com/track/megalovania Other music I would recommend: Portal 2 soundtrack http://www.thinkwithportals.com/music Cave Story soundtrack http://www.cavestory.org/download/music.php Fez Soundtrack http://music.disasterpeace.com/album/fez-ost Huskybythegeek Malukah http://www.malukah.com/index.php/music pLasterbrain Madoka Magica soundtrack Avatar The Last Airbender soundtrack The Legend of Korra soundtrack Trigun soundtrack Fulmetal Alchemist soundtrack Eureka 7 soundtrack