I fucking love video game soundtracks, from their inception to today. There are so many video games I've plaid that I don't think I would consider complete or good experiences without the soundtrack.
Please post links to good songs from video games in this thread.
One of my favorite songs is from Lufia II on the SNES: https://www.youtube.com/watch?v=WkwHKKWpoaE
The Caves of Qud soundtrack has great atmosphere, which is saying a lot since the games graphics are only a step away Rogue's ASCII style. https://www.youtube.com/watch?v=ke3LvHDnh8I
Also the entire Dragon Quest soundtrack is dope as hell, especially how the later soundtracks from the later games use the same motifs from earlier games.