Killing Floor 2 Server Configuration (LinuxServer-KFGame.ini)

Configuring Your KF2 Server

All core server settings live in KFGame/Config/LinuxServer-KFGame.ini (Linux) or KFGame/Config/PCServer-KFGame.ini (Windows). The file is generated on first launch — make sure you've started the server at least once before editing.

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Server Identity

Open the config file and find (or add) the [Engine.GameReplicationInfo] section:

[Engine.GameReplicationInfo]
ServerName=My KF2 Server
ShortName=KF2

Set ServerName to whatever you want players to see in the server browser.

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Admin Password

Find or add [Engine.AccessControl]:

[Engine.AccessControl]
AdminPassword=YourSecureAdminPasswordHere
GamePassword=

• AdminPassword — required for WebAdmin login and in-game adminlogin
• GamePassword — leave blank for a public server; set a password to require players to enter it on join

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Difficulty and Wave Settings

These are set as URL parameters at launch (in your startup command or systemd service), not in the INI file:

Setting	Parameter	Values
Difficulty	?difficulty=	0=Normal, 1=Hard, 2=Suicidal, 3=Hell on Earth
Wave count	?GameLength=	0=Short (4 waves), 1=Normal (7 waves), 2=Long (10 waves)

Example:

KF-BioticsLab?difficulty=2?GameLength=2

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Max Players

Find [Engine.GameInfo]:

[Engine.GameInfo]
MaxPlayers=6

KF2 supports up to 6 players in standard modes and up to 12 in some configurations. Note that performance degrades noticeably above 6 on lower-spec hardware.

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Map Rotation (Map Cycle)

Find [KFGame.KFGameInfo] and edit the GameMapCycles array:

[KFGame.KFGameInfo]
GameMapCycles=(Maps=("KF-BioticsLab","KF-BurningParis","KF-Farmhouse","KF-Outpost","KF-VolterManor"))

All map names are case-sensitive and must match the file name exactly (without the .kfm extension). To verify names for official maps, check the map list in the WebAdmin panel.

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Welcome Message

Still in [KFGame.KFGameInfo]:

[KFGame.KFGameInfo]
ServerWelcomeScreen=Welcome to our KF2 server! Type !help in chat for rules.

This message appears on the loading screen before players spawn in.

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Game Mode

Set in your launch URL, not the INI:

?game=KFGameContent.KFGameInfo_Survival

See the KF2 Game Modes article for all available mode class names.

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Full KFGame.KFGameInfo Example

[KFGame.KFGameInfo]
MaxPlayers=6
GameMapCycles=(Maps=("KF-BioticsLab","KF-BurningParis","KF-Farmhouse","KF-Outpost","KF-VolterManor","KF-AshwoodAsylum"))
ServerWelcomeScreen=Good luck, soldiers!
bEnableMapVote=true
MapVotePercentage=51
MapVoteDuration=30

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Applying Changes

Stop the server, edit the INI, then restart. KF2 overwrites config files on clean shutdown, so always stop the server before editing to avoid your changes being overwritten.