Best Valheim Server Mods in 2026: What Actually Works (and What Doesn't)

Valheim’s modding scene runs through BepInEx - a mod loader that hooks into the Unity engine. There’s no official mod API, but Iron Gate has openly encouraged community modding, and the ecosystem is mature enough that most popular mods have been stable through multiple game updates.

This guide is focused on server-side mods - the ones that affect multiplayer. Not client-only texture packs or UI tweaks that only the installing player sees. If you’re running a server for friends or a community, these are the mods worth knowing about.

Before You Start: The BepInEx Requirement

Every Valheim mod runs through BepInEx. It’s the mod loader - without it, nothing else works. Think of it as Forge for Minecraft, but for Unity games.

Installing BepInEx on a server involves uploading the BepInEx files to your server root and updating the startup command. On WinterNode, our support team handles the startup command change - you just upload the files. Our BepInEx installation guide walks through the full process.

Once BepInEx is running, adding mods is straightforward: download the .dll file from Thunderstore or Nexus, upload it to /BepInEx/plugins/, and restart the server.

The Crossplay/Mods Tradeoff

This is the single most important thing to understand before modding a Valheim server:

Crossplay and BepInEx mods are mutually exclusive.

When crossplay is enabled, Valheim uses PlayFab networking instead of Steam networking. BepInEx can’t hook into the PlayFab path, so mods simply don’t load. There’s no workaround, no compatibility patch. It’s one or the other.

• All Steam group? Disable crossplay, use mods freely.
• Xbox or Game Pass players? Keep crossplay on, no mods.
• Mixed group that wants mods? The Xbox/Game Pass players will need to sit this one out, or everyone plays vanilla.

This tradeoff is built into the game’s architecture. It’s not something that’s likely to change.

What About Valheim Plus?

Valheim Plus was the go-to all-in-one mod for years. It bundled dozens of tweaks - inventory management, build camera, shared map, stamina adjustments - into a single configurable package.

As of 2026, the project is effectively dormant. The last meaningful update was in 2024, and it doesn’t always work with current Valheim versions. You can still install the .dll as a BepInEx plugin, but you may be locking yourself to an older game version to keep it functional.

The good news: nearly every feature Valheim Plus offered now exists as a standalone BepInEx plugin that stays current. The community moved on, and the individual mods are generally more stable and better maintained than the monolith was.

Recommended Mods by Server Type

Chill Co-op (QoL Focus)

For groups that want vanilla Valheim with the rough edges smoothed out. These mods improve quality of life without changing the core experience.

RAM impact: Minimal. These mods add almost no server overhead. 6-8GB is fine.

Building-Focused

For groups that spend more time building than fighting. These mods make construction less tedious and more creative.

RAM impact: Low to medium. PlanBuild and Clutter can add entities, but nothing dramatic. 8GB handles these well.

Hardcore/Combat

For groups that want Valheim to fight back harder. These mods add challenge, variety, and loot progression.

RAM impact: Medium to high. Mods that add creatures and items increase entity count significantly. Start at 10GB, go to 12GB if stacking multiple.

Server-Side vs. Client-Side: How to Tell

Valheim mods fall into three categories:

• Server-side only: Install on the server, works for everyone. Players don’t need to do anything.
• Client-side only: Players install locally. Doesn’t affect the server at all (UI mods, graphics tweaks).
• Both required: Must be on the server AND installed by each connecting player.

Most gameplay mods fall into the “both” category. Each mod’s Thunderstore or Nexus page specifies which type it is under “Networking” or “Installation.” If a mod says “server-side” but players aren’t seeing its effects, they probably need it installed locally too.

For players, the easiest setup is r2modman or Thunderstore Mod Manager (recommended). Create a profile matching your server’s mod list, and players import that profile. It takes the guesswork out of keeping everyone synchronized.

Which Mods Are Heavy? A Performance Guide

Not all mods are equal when it comes to server performance. Here’s what to watch for:

Lightweight (install freely):

• UI changes and keybinds
• Crafting convenience (Craft from Containers, etc.)
• Map and navigation mods
• Chat and communication mods

Medium (mind your RAM):

• Building mods with new pieces (each piece type is tracked)
• Mods that add items to the loot table
• Terrain modification mods

Heavy (budget extra resources):

• Creature mods (more enemies = more entities)
• Worldgen mods (fundamentally change how chunks generate)
• Automation mods (conveyor systems, auto-smelters)
• Total conversion modpacks

If you’re stacking mods from the “heavy” category, budget 10-12GB minimum. Our RAM guide has detailed breakdowns.

Installing Mods on Your Server

The short version:

1. Install BepInEx on your server (our guide)
2. Download mods from Thunderstore or Nexus
3. Upload .dll files to /BepInEx/plugins/ on your server
4. Restart the server
5. Have players install matching client-side mods if required

On WinterNode, you upload mods through the File Manager or SFTP. If a mod needs a config file, it generates one in /BepInEx/config/ on first server start - you can then edit it through the File Manager.

Getting Started

If you’re setting up a modded Valheim server, start with a small mod list from the “Chill Co-op” category and add from there. It’s much easier to debug issues with a small mod list than to install 30 mods at once and figure out which one is causing crashes.

WinterNode game servers start at $1.99/GB with no extra charges for CPU, storage, or mod support. Get your Valheim server → Everything’s backed by a 48-hour refund policy. Our Valheim help center has step-by-step guides for BepInEx, Valheim Plus, and general server management.