Multiplayer
Initially, the SWAT 3 servers for online multiplayer modes were operated by Sierra Entertainment. Following the purchase of Sierra by Activision, the SWAT 3 multiplayer servers went down permanently. However, multiplayer functionality can be restored using VPN software and third-party multiplayer servers operated by SWAT 3 fan communities.
Additionally, a fair-sized modding community has grown around SWAT 3, producing new missions, maps, weapons and character models for use in both singleplayer and multiplayer modes. SWAT 3 includes tools and support for modifying the game.
Read more about this topic: SWAT 3: Close Quarters Battle