XLink Kai is a global gaming network - bringing together XBox 360, XBox, Playstation 3, Playstation 2, Gamecube and PSP users, in one integrated community. It is software running on your PC or Macintosh that allows you to play system-link enabled games online for free. Kai is the only service that is not console specific, and boasts one of the friendliest communites available. A special version of DD-WRT is also available for select routers which included the XLink Kai connector built in.