It enables players on the Xbox, PlayStation 2, PlayStation 3, PlayStation Portable, Nintendo GameCube and other consoles to play games across the Internet using a network configuration that simulates a world-wide local area network (LAN).
For XLink Kai to work, the Kai client program must be installed and running on a compatible personal computer or Linux device. The Kai client is required to let consoles connect online. XLink Kai acts like a proprietary LAN network that "tunnels" games over the internet to connect users from all over the world, creating a massive online gaming network with this free networking service. For the Xbox, the functionality is provided directly within the XBMC GUI; however, the Kai client is still required to be running on a computer on the user's network. It is also possible to run the Kai client on other Linux-based devices, such as modified Linksys WRT54G series routers or the Linksys NSLU2 NAS devices.
A list of compatible system-link Xbox games is on the teamxlink.co.uk website.
Xbox Media Center (XBMC) for Microsoft's Xbox console has a control client for XLink Kai that allows control of the XLink Kai software program from the user's Xbox via XBMC GUI.
Kai 8.4 is a foundational release specifically focused on internationalization and platform independence.