Airship Serenity by Kevin MacLeod
This is the first slow 8-bit piece I ever tried. There was some skepticism going in, but holy man! This turned out great! You can use it for your game credits, or more chill parts of your game. Maybe at the Healing Shack, or the Abe Vigoda Memorial Pagoda and Koi Pond. The uncompressed download has a bonus percussion track.