Terraria was released in 2011 by Re-Logic, and its music was composed by Scott Lloyd Shelly. The Day theme, often listed as Overworld Day, plays on the surface during daylight hours while players explore, mine and build. As Terraria grew into one of the best known sandbox games, clips and loops of the track spread across YouTube, streams and gaming soundboards. Its simple, memorable melody became shorthand for peaceful in game exploration, which is why creators still use it whenever they want instant Terraria nostalgia.