5 Looping Dungeon BGM's in the classic NES style. 

https://w.soundcloud.com/player/?url=https%3A//api.soundcloud.com/playlists/1509870223&color=%23ff5500&auto_play=false&hide_related=false&show_comments=true&show_user=true&show_reposts=false&show_teaser=true&visual=true

Available in 3 formats.  OGG, Wav and MP3.

Terms of Service:

Can be used in any commercial or non-commercial project.  Any engine.

May not be resold as an asset, only to be used inside of a game project or video.