Source-checkedCreatures & NPCs

Spawn That

by ASharpPen · for Valheim

Advanced tool for customizing mob spawners throughout the world with configuration files.

761KDownloads
33d agoLast updated
BepInExLoaders
ThunderstoreSource

About Spawn That

From Thunderstore

Advanced tool for customizing mob spawners throughout the world with configuration files.

Spawn That!

This is an advanced tool for configuring all world spawners.

With this, it is possible to change almost all of the default settings for the way spawners work in Valheim. Want to have a world without trolls? Possible! (probably) Want to have a world with ONLY trolls? Possible! (almost) Want to have a world where greydwarves only spawn at night? Possible! Just want to have more/less of a mob type? Simple modifiers exist!

Features

  • Change spawning rates of specific mobs
  • Replace existing spawn configurations throughout the world
  • Set almost any of the default parameters the game uses
  • Add your own spawn configuration to the world
  • Modify the localized spawners by mob type and location
  • Dump existing game templates as files using the same format as the mod configs.
  • Easy to copy-paste and change the parts you want.
  • Investigate what the world throws at you.
  • Server-side configs
  • Modify the spawners in camps, villages and dungeons
  • Conditions and settings specific to integrated mods:
  • Creature Level and Loot Control
  • MobAILib
  • Epic Loot

Documentation

Documentation can be found on the Spawn That github page.

Example

[WorldSpawner.321]
Name = Angry Test Boars
PrefabName = Boar
Biomes = Meadows
Enabled = true
HuntPlayer=true
MaxSpawned = 30
SpawnInterval = 1
SpawnChance = 100
SpawnDuringDay = true
SpawnDuringNight = true
ConditionLocation = Runestone_Boars
ConditionDistanceToCenterMin = 500
ConditionAreaSpawnChance = 50

[WorldSpawner.321.CreatureLevelAndLootControl]
SetInfusion=Fire

[WorldSpawner.321.EpicLoot]
ConditionNearbyPlayerCarryLegendaryItem = HeimdallLegs

Server/Client

Install on both.

Spawning is generally handled client-side in Valheim. Clients connecting to a server will not be using their local configs. Instead, client will get in-memory configs sent from the server.

API support

Spawn That now supports configurations by code. Configurations are merged with configs from file. File configurations will be applied last, ensuring that users can still override the settings made by mods.

A nuget release has also been made available.

Configurations are applied once pr world entered, and synced from server-side.

API is more feature-rich than the config files though.

Example:

public class Plugin : BaseUnityPlugin
{
	public void Awake()
	{
		// Register for configuration event.
		SpawnThat.Spawners.SpawnerConfigurationManager.OnConfigure += MySpawnerConfigurations;
	}

	public void MySpawnerConfigurations(ISpawnerConfigurationCollection spawnerConfig)
	{
		// Add a new world spawner
		spawnerConfig
			.ConfigureWorldSpawner(123)
			.SetPrefabName("Skeleton")
			.SetMinLevel(2)
			.SetMaxLevel(3);

		// Modify an existing vanilla spawner
		spawnerConfig
			.ConfigureWorldSpawner(1)
			.SetSpawnInterval(TimeSpan.FromSeconds(30))
			.SetPackSizeMin(3)
			.SetPackSizeMax(10);

		// Modify a local spawner
		spawnerConfig
			.ConfigureLocalSpawnerByLocationAndCreature("Runestone_Boars", "Boar")
			.SetPrefabName("Skeleton");
	}
}

Support

If you are already getting a server from Survival Servers, going through the link below sends a bit my way. No extra cost for you, but a beer for me!

If you feel like it

Highlights

From source data

Loaders

Runs on BepInEx.

Footprint

Rated a light load on a server.

Dependencies

Needs 1 other project installed alongside it.

Spawn That on Nxeon

From our catalogue
One-click install
Supported on Nxeon Valheim servers, for BepInEx servers. We download it from Thunderstore, place it, and restart the server.
Server side
Optional on the server
Server type needed
BepInEx
Server load
light
Smallest plan we suggest
Valheim — 4 GB (4 GB RAM). This follows our own load rating above, not a benchmark.
Latest build
1.2.20, released 2026-10-01

Game versions by loader

LoaderGame versionsNewest
BepInEx

From 26 recorded builds of Spawn That.

Recent builds

BuildReleasedGame versionsLoaders
1.2.202026-10-01n/aBepInEx
1.2.192026-09-09n/aBepInEx
1.2.182025-06-08n/aBepInEx
1.2.172025-03-31n/aBepInEx
1.2.162025-03-10n/aBepInEx
1.2.152024-10-29n/aBepInEx

Dependencies

Declared by the newest build that lists any. Required ones are installed with it on one-click installs.

Run Spawn That on a Valheim server

Pick a server or deploy a new one above; it is installed in one click.

What kind of mod it is

From the catalog
Listed on Thunderstore as “Content”

Creatures & NPCs

Adds or changes creatures, NPCs and how they behave.

Works on a server

From source side support

Thunderstore lists server-side support for Spawn That as optional: it can run on a server, but isn’t required there.

Compatibility

Game
Valheim
Loaders
BepInEx
Runs on
Serveroptional on the server
Requires
One-click install needs a BepInEx server. 1 other project installed alongside it.

Verified at the source

  • ✓ThunderstoreOfficial listing, checked 2026-10-02Open ↗
  • ✓AuthorASharpPen, as published on Thunderstore
  • ✓LicenseNot published by the sourceFree

Spawn That, answered

Generated from the mod’s own source data.

Do my players need to install Spawn That?

Thunderstore lists server-side support for Spawn That as optional: it can run on a server, but isn’t required there.

Which loaders does it support?

BepInEx.

Is it free?

Yes. Spawn That is free to download from Thunderstore.

How do I add it to my Nxeon server?

Use “Add to a server” on this page, or open NxLabs from your dashboard. We install it, restart your server and switch it on.

NxLabs

Run Spawn That on a Valheim server.

Deploy in about a minute from $9.99 a month, then add Spawn That in one click.