Source-checkedCreatures & NPCs

BiomeLock

by Radamanto · for Valheim

BiomeLock restricts biome progression by blocking player actions until the required boss is defeated.

8.4KDownloads
1d agoLast updated
BepInExLoaders
ThunderstoreSource

About BiomeLock

From Thunderstore

BiomeLock restricts biome progression by blocking player actions until the required boss is defeated.

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BiomeLock

BiomeLock restricts biome progression by blocking player actions until the required boss is defeated.

Private Keys System

BiomeLock uses a fully individualized progression system based on private keys. Each global world key (such as defeating a boss) automatically generates a corresponding private key for the player.

These private keys are assigned individually, meaning each player has their own progression, independent of other players on the server. All biome access checks, limits, and restrictions are performed exclusively based on these private keys.

When a biome boss is defeated, the corresponding private key is automatically granted to all players who participated in the boss defeat.

With this system, BiomeLock ensures:

  • 100% individual progression per player
  • Precise control over access and restrictions
  • No direct dependency on the global world state
  • Full compatibility with multiplayer servers and customized progression

While the player is inside a blocked biome

  • Interaction Blocking

Blocks interactions with world objects, containers, items, and pickable objects while the effect is active.

  • Combat Blocking

Blocks all types of attacks (melee, projectile, and area).

  • Building and Terrain Blocking

Prevents building, repairing, removing structures, and modifying terrain using the hammer, hoe, or cultivator.

  • Dungeon Blocking

Blocks entry into dungeons.

  • Map Exploration Blocking

Prevents map exploration and fog of war reveal.

  • Pickup Restrictions

Blocks both automatic and manual item pickup.

  • On-Screen Warnings

Displays periodic center-screen messages informing players that the biome is locked.

  • Trader Restrictions

Blocks interaction with traders until the required boss is defeated Haldor unlocks after defeating Eikthyr Bog Witch unlocks after defeating The Elder Hildir unlocks after defeating The Elder.

  • Mob Spawn Blocking

Prevents mob spawning inside blocked biomes

  • Map Pin Blocking

Prevents placing map pins while inside blocked biomes

Global restrictions based on private keys

  • Skill CAP

Added a skill CAP system based on private keys.

  • Guardian Power

Prevents the use of the guardian’s power if you have not defeated it yet.

  • Boss Progression Restrictions

Blocks boss summoning until the previous boss has been defeated

Boss Summon Day Restriction

Optionally blocks interaction with boss altars until the minimum configured in-game day for each boss is reached. Each boss has its own individual and independent configuration, allowing you to define on which in-game day its summon will be unlocked.

Boss Summon Cooldown

Optionally sets how many full in-game days each player must wait before summoning the same boss again (section 10, disabled by default, 1 day per boss, 0 disables a boss). The cooldown is individual: it is saved on the character, separately for each boss and each world, and does not block other players or other bosses. Only summons confirmed by the altar start the cooldown, so failed attempts never consume it.

Features

  • Admin Bypass

Allows administrators to bypass all restrictions when enabled.

  • Fully Configurable

All features can be individually enabled or disabled via configuration, with full server synchronization.

  • Mod Integration

Other mods can lift the biome restriction in specific areas through BiomeLockAPI, such as inside a player territory.

  • Multi-language Support

Includes built-in translations for English, Portuguese, and German. Additional languages can be added via external YAML translation file. An example translation file is included in the plugin files.

Private Keys by Boss and Events

| Category | Biome / Context | Boss / Event | Granted Private Key | |---------------|-----------------|-----------------------|----------------------------| | Boss | Meadows | Eikthyr | bl_defeated_eikthyr | | Boss | Black Forest | The Elder | bl_defeated_gdking | | Boss | Swamp | Bonemass | bl_defeated_bonemass | | Boss | Mountain | Moder | bl_defeated_dragon | | Boss | Plains | Yagluth | bl_defeated_goblinking | | Boss | Mistlands | The Queen | bl_defeated_queen | | Boss | Ashlands | Fader | bl_defeated_fader | | Boss | Deep North | Kall — initial defeat | bl_defeated_frozenking | | Boss | Deep North | Kall — final defeat | bl_defeated_frozenking_p3 | | Creature Kill | Ocean | Serpent | bl_defeated_serpent | | Creature Kill | Black Forest | Troll | bl_killedtroll | | Creature Kill | Swamp | Surtling | bl_killed_surtling | | Creature Kill | Frost Caves | Bat | bl_killedbat | | Creature Kill | Writhan encounter | Writhan | bl_defeated_writhan | | Creature Kill | Hive encounter | Hive | bl_defeated_hive | | Creature Kill | Deep North | Frysling | bl_killed_frysling | | Quest / NPC | Black Forest | Hildir – Quest 1 | bl_hildir1 | | Quest / NPC | Mountain | Hildir – Quest 2 | bl_hildir2 |

Read the full description on Thunderstore →

Highlights

From source data

Loaders

Runs on BepInEx.

Footprint

Rated a light load on a server.

Last update

Its author last shipped an update 1d ago.

BiomeLock 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 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
1.2.1, released 2026-10-14

Game versions by loader

LoaderGame versionsNewest
BepInEx

From 22 recorded builds of BiomeLock.

Recent builds

BuildReleasedGame versionsLoaders
1.2.12026-10-14n/aBepInEx
1.2.02026-10-09n/aBepInEx
1.1.92026-10-07n/aBepInEx
1.1.82026-09-29n/aBepInEx
1.1.72026-09-26n/aBepInEx
1.1.62026-09-13n/aBepInEx

Dependencies

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

Run BiomeLock 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.

Compatibility

Game
Valheim
Loaders
BepInEx
Requires
One-click install needs a BepInEx server.

Verified at the source

  • ✓ThunderstoreOfficial listing, checked 2026-10-15Open ↗
  • ✓AuthorRadamanto, as published on Thunderstore
  • ✓LicenseNot published by the sourceFree

BiomeLock, answered

Generated from the mod’s own source data.

Which loaders does it support?

BepInEx.

Is it free?

Yes. BiomeLock 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 BiomeLock on a Valheim server.

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