The Nintendo DS family is a family of handheld game consoles developed, manufactured, released and marketed by Nintendo. Initially released as an experimental platform ancillary to the then-current Game Boy Advance family, Nintendo DS soon replaced it as Nintendo's flagship handheld device family. The DS was distinguished from its predecessor by featuring a folding "clamshell" form factor and two screens—the lower screen being a touchscreen enabling input with an included stylus pen. It was also Nintendo's first handheld console to have built-in wireless capabilities, supporting both local communication between other DS consoles, and internet communications via the now-discontinued Nintendo Wi-Fi Connection service.