My favorites when it comes to games:

- Final Fantasy VIII - https://www.youtube.com/watch?v=X6kAwpgW29M

- Castlevania SOTN - https://www.youtube.com/watch?v=0Ghd3tvsNAs

- Uplink - https://www.youtube.com/watch?v=QliQ0livbeQ

- Simutrans - https://www.youtube.com/watch?v=r9obpifVR40&list=PL8B83EB211...

I love using all of them as programming "playlists"! The entire FF franchise has great OST. I just prefer FF8 because it was the one I used to play on my childhood :)

Edit: Remembered some more great ones :)