Multiplayer games America's Army Battlefield 1942 Battlefield 2 Battlefield 2142 Battlefield Vietnam Call of Duty Call of Duty: United Offensive Call of Duty 2 Call of Duty 4: Modern Warfare Call of Duty 5: World at War Counter-Strike 1.6 Counter-Strike: Condition Zero Counter-Strike: Source Enemy Territory Enemy Territory: Quake Wars Half-Life Half-Life: Natural Selection Half-Life 2: DM Left 4 Dead Medal of Honor: Allied Assault Medal of Honor: Breakthrough Medal of Honor: Spearhead Quake 1 Quake 2 Quake 3 Quake 4 Return to Castle Wolfenstein Soldier of Fortune 2 Team Fortress: Classic Team Fortress 2 Unreal Tournament Unreal Tournament 2004 Unreal Tournament 3 Teamspeak servers