Super Metroid was released by Nintendo for the Super Nintendo in 1994, and its atmospheric opening music became one of the most recognisable parts of the game. The slow, lonely theme helped establish the planet Zebes as a place to explore rather than simply fight through. A cappella arrangements later circulated online as fans recreated the score with layered voices, keeping the melody intact while giving it a human texture. Retro gaming creators still use these versions because the theme instantly signals Nintendo nostalgia, isolation and adventure without needing any explanation.