How to change world modifiers on a Valheim server

Add -modifier raids none to the server's launch options to turn off raids. Repeat it for combat, deathpenalty, resources or portals, after any -preset.

-modifier

Sets one world modifier, like combat, raids or portals, to a chosen value.

-modifier <modifier> <value>

Examples

-modifier raids none

No enemy raids on bases.

-modifier resources more

More resource drops.

-modifier portals casual

Portals allow all items.

Arguments

modifierRequired: combat, deathpenalty, resources, raids or portals.
valueRequired: A value valid for that modifier.

What it does

Use it to fine-tune difficulty. Repeat it for each modifier you change, and place it after -preset if you use one. Valid pairs: combat (veryeasy, easy, hard, veryhard), deathpenalty (casual, veryeasy, easy, hard, hardcore), resources (muchless, less, more, muchmore, most), raids (none, muchless, less, more, muchmore), portals (casual, hard, veryhard).

Good to know

Add it to the server start line in start_server.sh (Linux) or start_headless_server.bat (Windows); it applies on the next server start.

Run it on your server

Launch options go on the server's start line. Admin commands are typed in the in-game console (F5) by a player on the admin list. New to this? Start a Valheim server first.

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