How to configure Undead Legacy
How to Configure Undead Legacy
Undead Legacy is a survival-realism total overhaul for 7 Days to Die, created by Subquake. It rebuilds the game around item durability, weapon attachments, vehicle maintenance, a deep electricity system, eight class professions, and a clean reworked UI. It is the most detailed crafting overhaul in the 7D2D scene, and also the heaviest to run. This guide covers installing it on your GSK server, the required settings, and the version situation you need to understand first.
Like other overhauls, Undead Legacy replaces more than a simple Mods/ folder, so it needs a clean server and EAC off. For general mod basics, see How to Install Modlets and Overhaul Mods.
Before You Start: The Version Situation
Undead Legacy is version-sensitive, more so than most overhauls, so read this before buying or installing anything.
- The stable Undead Legacy line is tied to the older A21 game branch (the 2.6.x line), not the current 2.x release. Subquake is actively porting it forward, but that work is not finished.
- If you force the A21 build onto a current-branch server, you will get a wall of errors and it will not load.
- Server and every client must run the exact same Undead Legacy build and the matching base game branch.
Because of this, your server needs to be on the branch Undead Legacy targets. Open a ticket and we can set your server to the correct game version before you install.
The other hard requirements:
- EAC must be off, on the server and on every client.
- Start fresh. As a total overhaul, Undead Legacy cannot load a vanilla save. Reinstall or reset the server first if it has been played on.
- It is the most resource-hungry mainstream 7D2D overhaul, owing to its durability simulation. Size your plan with headroom, especially for larger maps or public servers.
Take a backup through the Backups tab before you begin.
Step 1: Stop the Server
From the panel Console tab, stop the server and wait for offline status.
Step 2: Install the Server Bundle
Download the latest dedicated server package from the official Undead Legacy site (ul.subquake.com). The server archive includes extra loader and runtime files beyond a plain Mods/ folder, which is why partial uploads break Undead Legacy more often than lighter mods.
- Extract the package locally.
- Connect over SFTP (credentials in the panel Settings tab).
- Upload the full contents into the server root, overwriting existing server files when prompted. Make sure every file transfers; a partial upload is the most common cause of bundle errors.
Step 3: Disable EAC
Open serverconfig.xml in the File Manager and set EAC off:
<property name="EACEnabled" value="false"/>
Save. Every player must also launch with EAC disabled.
Step 4: Set the World
Set a fresh world so the mod generates cleanly. In serverconfig.xml:
<property name="GameWorld" value="Navezgane"/> <property name="GameName" value="UndeadLegacy01"/>
For random generation, set GameWorld to RWG. If you are importing a prepared Undead Legacy save, upload it and point GameWorld and GameName at that world to avoid an accidental wipe. Undead Legacy ships heavier prefabs, so larger maps take longer to generate.
Step 5: Start and Watch the First Boot
Start the server. First boot generates the world and loads the bundle, which takes longer than vanilla. Watch the Console to confirm Undead Legacy loads without bundle errors, and let world generation finish rather than restarting.
Some Undead Legacy options are only editable by hand in the config files rather than through a simple toggle, so plan to edit serverconfig.xml directly for advanced tuning.
Common Issues
| Problem | Fix |
|---|---|
| Bundle errors or missing loader files on boot | Partial upload. Re-upload the full server bundle, making sure every loader and runtime file transferred |
| Version mismatch pop-up for players | Server and client are on different Undead Legacy builds, or the wrong base game branch. Align both exactly |
| Mod will not load at all | The build does not match the server's game branch. Open a ticket so we can set the correct version |
| Players cannot connect | EAC is still enabled somewhere. Confirm it is off on the server and every client |
| Severe lag on a busy server | Undead Legacy is CPU-heavy by design. Reduce map size or player count, or move to a larger plan |
What to Read Next
- How to Install Modlets and Overhaul Mods for the general overhaul workflow
- How to Configure Darkness Falls for the other major overhaul
- Maintenance for backups before and after mod changes