StreetPass Mii Plaza was a built-in application on the Nintendo 3DS, released in 2011, where players collected Mii characters from other consoles they passed using StreetPass. Its menu sounds were part of the handheld's friendly, colorful interface, designed to make browsing visitors, games and plaza rooms feel light and approachable. As the 3DS became a nostalgic system in later years, short interface sounds from its menus began circulating in soundboards and video edits, where this hovering tone is now used as shorthand for that era of portable Nintendo gaming.