Online gaming
The GameCube was at one point online compatible by using a GameCube Broadband Adapter or Modem Adapter, though only four games featured an online component which were
Homeland,
Phantasy Star Online Episode I & II,
Phantasy Star Online Episode I & II Plus and
Phantasy Star Online Episode III: C.A.R.D. Revolution. This online play was ended as of April 2007. Although the official servers for the PSO titles are now offline, it is still possible to play online on various private servers such as SCHTHACK. LAN gameplay is still available for the three titles that originally supported it as well:
Mario Kart: Double Dash‼,
1080° Avalanche and
Kirby Air Ride. There are some third-party PC applications such as
Warp Pipe and
XLink Kai that allows online play of these three games by
tunneling the network traffic through a computer and across the Internet, though this is not supported by Nintendo.