XLink Kai 是一套同時把 XBox, Playstation 2 / 3、Gamecube,以及PSP 的所有使用者,全部給整合成一個龐大社群的遊戲網路平台。 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.