InterServerPortal

InterServerPortal

Step through a portal on a dedicated server and land in your own local

single-player world — and step back to return to the server. No logout → main

menu → pick world → reload → reconnect. One portal, one loading screen. The same

mod also adds same-world portal networks that mesh all of your portals so you

can hop between any of them. Vanilla assets only.

What it does (in plain English)

• Turns a portal into a door to your own world. Flag a portal as

inter-server; walk through it on the server and you're switched to your local

world. The portal is shared — everyone who uses it goes to their own world.

• Remembers the way back. A portal in your local world offers Return to

origin server and reconnects you to where you came from.

• Meshes all your portals into a network. Set a portal to Network mode and

it links with every other network portal you built — walk through one and pick

any of the others from a nearest-first menu (a normal in-world teleport, no

world switch).

• Colours every portal by what it does. Vanilla tag portals glow their normal

blue, network portals glow violet, inter-server portals glow cyan — and,

like vanilla, they only light up when they're actually connected/usable.

• Locks portals with an entry code. Optionally require a code before a portal

will travel (salted + hashed — the raw code is never stored).

• Keeps vanilla portals vanilla. Unflagged portals still pair 1:1 by tag

exactly as before. Wood portals still block ore; stone portals still carry it.

• Optional: carry ore through a wood portal, for a price. Wood portals get a

3×2 storage box. Enable the carry toll and you can bring ores, metals, dragon

eggs and Mistlands/Ashlands machinery through a wood portal — as long as you've

beaten the boss of the biome that cargo comes from and the box holds the

fee (1 Surtling core per metal, 1 Crystal per dragon egg, and so on). Off by

default, fully configurable, and server authoritative so nobody can edit their

own config to skip it.

• Optional Discord ping. Set a webhook and get a message whenever you cross

from a server into your local world.

Requirements

• Valheim 1.0.7 or later. Version 0.11.0+ of this mod is built for the 1.0

release; if you are still on a pre-1.0 game build, use 0.10.1.

• The dedicated server must NOT run with -crossplay. Crossplay servers are

not supported: an inter-server portal on one refuses to travel and tells you

why. Crossplay routes the connection through PlayFab instead of a Steam socket,

and the reconnect the return trip depends on is unreliable there. Start the

server without the -crossplay flag (Steam-only) and everything works.

• BepInExPack_Valheim 5.4.2350+ and Jotunn 2.30.0+ — pulled in automatically

by a mod manager. If you are upgrading an existing setup from a pre-1.0 game,

update both of them too: an older Jotunn fails to load on 1.0.7 and takes this

mod down with it.

Quick setup

• Install this mod on every player's machine. Installing it on the dedicated

server is optional (0.12.0+): the mod works on a vanilla server, but the

server install buys three things — same-world network menus and glow that

see every zone (not just the ones loaded near you), and a carry toll that

players can't edit out of their own config. It no-ops on a headless server

otherwise. Without it you'll see a one-time "Server has no InterServerPortal"

notice on joining.

• Make sure you have at least one local single-player world to travel to.
• In-game, build a normal portal. Hold L.Shift + Use on it to open the config

panel.

• Tick inter-server, add a destination (label, local world name), and close

the panel.

• Walk through the portal — you're switched to your local world. In that

world, a portal offers Return to origin server to come back.

For same-world networks instead: open the same panel, set Link mode → Network

on two or more portals you built, then walk through one to pick another.

That's the minimum. Everything else is optio