Team Fortress is an online action game that features a wide variety of character classes -- from Medic to Spy to Demolition Man -- enlisted in a unique style of online team warfare.

Originally released in 1996 by Austrailian based Team Fortress Software, TF has been downloaded by millions of people as it has evolved and become one of the most popular online action games of all time.

The latest incarnation of this multiplayer phenomenon, Team Fortress 1.5, is now available as a free add-on for Half-Life and adds an advanced user-interface system (V-GUI), new networking and server technologies, new scenarios, and spectator modes.

Team Fortress 1.5 also serves as a point of reference for those who are interested in what Valve has in store for the upcoming Team Fortress 2: Brotherhood of Arms.

Players can upgrade to Team Fortress 1.5 via Half-Life's in game update tool or by downloading the latest Half-Life update available from Sierra.com.

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