EyeOfSauron

One portal to watch them all.

Bring the atmosphere of Mordor into Valheim with EyeOfSauron, a custom portal visual enhancement that transforms a specially named portal into the iconic, ever-watchful Eye of Sauron.

The Eye is more than a static decoration. It scans its surroundings, blinks at irregular intervals, and radiates a fiery supernatural glow.

Designed for Viking fortresses, dark towers, mountain strongholds, fantasy builds, and dedicated multiplayer servers.

Features

• Animated Eye of Sauron — A supernatural eye appears at the portal.
• Automatic portal detection — The effect activates on portals named SAURON.
• Continuous scanning animation — The eye moves naturally instead of remaining fixed.
• Realistic blinking — Randomized blinking makes the eye feel alive.
• Fiery visual effects — Glowing embers and atmospheric lighting enhance the appearance.
• Configurable appearance — Customize eye size, movement, lighting, and animation.
• Multiplayer support — Players with the mod installed can see the effect on supported portals.
• Vanilla portal integration — Works with Valheim's existing portal system without requiring a completely new portal structure.

Installation

Thunderstore Mod Manager / r2modman

1. Open Thunderstore Mod Manager or r2modman.
2. Select Valheim.
3. Select your preferred mod profile.
4. Search for EyeOfSauron.
5. Install the mod and its required dependencies.
6. Launch Valheim using Start Modded.

Manual installation

1. Install BepInExPack for Valheim.
2. Download EyeOfSauron.
3. Extract the package.
4. Copy the mod's DLL and required bundled files into Valheim/BepInEx/plugins/.
5. Launch the game.

Avoid installing multiple copies of the same mod.

How to use

Step 1 — Build a portal

Construct a regular Valheim portal using the normal building system.

No special construction process is necessary.

Step 2 — Set the portal name

Interact with the portal and enter:

SAURON

Use the exact uppercase name.

Step 3 — Activate the effect

Once the portal is recognized, EyeOfSauron activates its visual effects on the client.

The portal becomes the centerpiece of a supernatural, animated Eye of Sauron display.

Step 4 — Customize the appearance

Open Thunderstore Mod Manager, select Edit Config, and locate the EyeOfSauron configuration.

Adjust the visual settings to suit your build.

Crafting recipe

EyeOfSauron does not require a separate crafting recipe.

The mod enhances a standard Valheim portal. Build your portal with the normal in-game materials and name it SAURON.

The mod does not require a separate Eye of Sauron item to be crafted.

Configuration

EyeOfSauron includes adjustable visual parameters.

The displayed setting names may vary between releases. Use the explanations in the generated configuration file.

Recommended configurations

Dark Fortress

Use a larger eye and stronger ember effects to create an intimidating focal point.

Subtle Portal Guardian

Reduce the eye's size and lighting intensity for a mysterious, less intrusive appearance.

Tower of Sauron

Place the portal at the top of a tall stone tower or fortress to give the impression of an Eye watching over the surrounding landscape.

Multiplayer and dedicated servers

EyeOfSauron supports multiplayer environments, with an important distinction between gameplay state and visual rendering.

• The mod can be installed on a dedicated server.
• Each player who wants to see the Eye must install the mod on their own client.
• The dedicated server does not render visual effects or transmit the rendered Eye to unmodded clients.
• Players without the mod will not see the custom Eye animation.
• The effect is associated with portals carrying the configured SAURON name.

For the most consistent experience, install the same mod version on participating clients.

Troubleshooting

The Eye does not appear

• Verify that the portal is named exactly SAURON.
• Confirm that EyeOfSauron is enabled in your mod profile.
• Make sure you launched Valheim in modded mode.
• Check that BepInEx loads the plugin successfully.

Other players cannot see the Eye

Every player who wants to see the effect must install the mod locally.

Installing it only on a dedicated server is not sufficient for client-side rendering.

The animation is not working correctly

Check the BepInEx log for plugin errors, verify the mod version, and temporarily disable potentially conflicting portal-visual mods.

Performance considerations

Increasing the scale, lighting, or particle intensity may affect performance on less powerful systems.

Compatibility

Designed for Valheim's standard portal system.

Other mods that modify portal visuals, shaders, or animations may affect compatibility. Compatibility with every third-party portal mod is not guaranteed.

Updates

When updating EyeOfSauron, keep the same Thunderstore package installed rather than introducing duplicate DLLs.

Existing configuration and saved-world compatibility are intended to be preserved across updates.

Source code and issues

GitHub: https://github.com/Sn4Pz/SauronEyeMod

Report bugs with your Valheim version, EyeOfSauron version, and relevant BepInEx log entries.

The Eye sees all.

Ash nazg durbatulûk...