Topic: Best free video game soundtracks?

I have a question
Are there any good video-game soundtracks for free? I prefer downloads and I already have the soundtracks for Mighty Switch Force, Mutant Mudds, Mighty Milky Way and Mighty Flip Champs. Please provide the link to the soundtrack if possible.

Zreo (Zelda re-orchestrated) have the Legend of Zelda soundtracks (not official ones though but they are VERY good).
There is always the amazing World of Goo soundtrack.
I can't think of anything else at the minute.

Cosmos X2 Soundtrack and Antipole Soundtrack by Zack Parrish and pretty neat:

Soundtrack page: http://www.saturninegames.com/site/downloads