Adding World Modifiers to Your Valheim Server

World modifiers allow you to customize different options to increase or decrease how challenging you want your server to be. There are several different modifiers available, such as combat difficulty, resource gains, and raid frequency.

Step 1: Access the Startup Settings

Head to your Game Panel and access your Valheim server. Make sure your server is offline before making changes, as startup arguments need to be set before the server starts.

To the left of the panel, click on Startup to access the startup configuration settings.

Step 2: Configure World Modifiers

In the Startup section, locate the Custom World Modifiers field. This is where you'll add your world modifier settings.

Important Notes:

Make sure to include the dash (-) before each world modifier
Servers read startup arguments in order as written
We recommend setting a preset first (if you want to use one), then individual modifier settings after
Setting a preset will overwrite previously set modifiers

Format Examples:

For presets:

-preset <value>

Example: -preset hard

For modifiers:

-modifier <modifier> <value>

Example: -modifier combat easy

For keys/toggles:

-setkey <value>

Example: -setkey passivemobs

Step 3: Save and Start Your Server

Once you've added your desired world modifiers, hit enter on your keyboard to automatically save the changes.

You can now Start your server and the new world modifiers will be applied!

Available World Modifiers

Presets

Presets are a good starting point for your server, as they'll change several different modifiers at once. You can further tune your server by setting individual modifiers after the preset.

Preset	Description
`casual`	Easier gameplay for relaxed experience
`easy`	Reduced difficulty
`normal`	Default Valheim experience
`hard`	Increased difficulty
`hardcore`	Maximum difficulty challenge
`immersive`	Focused on immersion
`hammer`	Building-focused experience

Example: -preset hard

Modifiers

Modifiers give you more control over specific aspects of your server. Use these to fine-tune a preset or create a completely custom experience.

Modifier	Available Values	Description
`combat`	`veryeasy` `easy` `hard` `veryhard`	Adjusts combat difficulty
`deathpenalty`	`casual` `veryeasy` `easy` `hard` `hardcore`	Changes death penalty severity
`resources`	`muchless` `less` `more` `muchmore` `most`	Modifies resource drop rates
`raids`	`none` `muchless` `less` `more` `muchmore`	Controls raid frequency
`portals`	`casual` `hard` `veryhard`	Adjusts portal restrictions

Example: -modifier combat easy

Keys (Toggles)

Keys or toggles are on/off settings that enable or disable specific features on your server.

Key	Description
`nobuildcost`	Removes building costs
`playerevents`	Enables/disables player events
`passivemobs`	Makes mobs passive (non-aggressive)
`nomap`	Disables the map feature

Example: -setkey passivemobs

Configuration Example

Here's an example of a complete world modifier configuration:

-preset hard
-modifier resources more
-modifier raids muchless
-setkey nobuildcost

This configuration would:

Start with the "hard" preset
Increase resource drops
Reduce raid frequency
Remove building costs

Note: For more detailed information about what each modifier does, check out the Valheim Wiki (opens in a new tab).

✅ That's it! Your Valheim server now has custom world modifiers configured. Experiment with different combinations to find the perfect balance for your gameplay! If you have any problems, contact us via Discord (opens in a new tab) so we can help you.

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