Lumaheim — Gamma and Brightness Controls

See your saga in a better light.

Valheim has some beautiful scenery. It helps if you can see it.

Lumaheim puts Gamma, Exposure, Contrast and Saturation directly into Valheim's existing Settings → Graphics page. Adjust the picture to suit your monitor, your room and your eyes, using sliders that look and feel like part of the game.

No extra configuration window. No hotkey to remember. Just open Graphics and tune your view.

Four controls, your choice

• Gamma: brighten shadows and midtones, or deepen them if you prefer a darker picture. Range: 0.50–2.50; default: 1.00.
• Exposure: raise or lower overall brightness. Range: −2.00 to +2.00 EV; default: 0.00. One positive stop doubles exposure.
• Contrast: soften the difference between light and dark, or give the image more contrast. Range: 50–150%; default: 100%.
• Saturation: dial colours back, boost them, or go monochrome. Range: 0–200%; default: 100%.

The neutral values preserve Valheim's original appearance. For a little more visibility at night, try a modest Gamma increase first, then adjust to taste.

Fits into the normal settings

Changes preview live in the scene behind the menu. OK saves them; Back restores your previous saved values. Switching tabs keeps your pending adjustments.

Reset Lumaheim returns all four controls to their defaults. You can save that reset with OK or cancel it with Back.

The controls use Valheim's native sliders, fonts and button styling, sit in the existing scrolling Graphics page, and connect to its controller navigation. No configuration-manager mod is required.

Personal settings, on your PC

Lumaheim is client-side. Install it on the computer you play on; your dedicated server needs no changes, and other players do not need the mod to join you.

It adjusts the rendered scene without changing world lighting, time or weather. Your preferences are local and persist between sessions. The existing colour-grading pipeline does the work, with a cached colour lookup and no additional full-screen rendering pass.

Installation

1. Install BepInExPack_Valheim for Valheim (BepInEx 5).
2. Close Valheim completely.
3. Extract the Lumaheim ZIP into your Valheim game folder. The DLL should end up at BepInEx/plugins/Lumaheim/Lumaheim.dll.
4. Launch Valheim, open Settings → Graphics, and scroll to Lumaheim, just before the quality sliders.

To uninstall, close the game and remove the Lumaheim plugin folder.

Compatibility and notes

• This release targets Windows PC and Valheim's current tabbed settings interface. Older versions with a different settings system are not supported.
• Mods that replace or disable colour grading may conflict or prevent these adjustments from appearing. Compatibility with every graphics mod has not been established.
• These controls adjust scene rendering, rather than your monitor's hardware settings or the menu artwork. They are not an HDR calibration tool.
• Preferences are saved in BepInEx/config/com.gomisan.lumaheim.cfg. If editing it manually, close the game first. Live reload through a separate configuration manager is not supported.
• The initial release has passed automated native UI/rendering checks and author playtesting. Please report problems with your game version and other visual mods listed.

Credits

Concept, direction and playtesting: Gomisan. Coded with the assistance of ChatGPT 6.0.

Built with BepInEx and Harmony, with thanks to their contributors and Andreas Pardeike. Valheim and its native UI and rendering assets belong to Iron Gate AB and are referenced at runtime; no extracted game assets are included in the download.

Title and header illustrations were created with OpenAI image generation under the author's direction. They are promotional artwork, not gameplay comparisons.

Thunderstore installation

Install with your mod manager, or close Valheim and copy this package's BepInEx folder into the game folder. Keep only one copy of the mod DLL. No configuration file is bundled; your existing preferences are preserved. These are client-side mods; the dedicated server does not need them.

AI disclosure

Coded with the assistance of ChatGPT 6.0. Packaging and documentation were prepared with OpenAI Codex. Store icons and promotional illustrations use OpenAI image generation and are not gameplay screenshots. The assembly includes AI attribution metadata.

Discord and feedback

Nexus comments/bug reports or Discord are equally welcome. Use whichever is easier; no need to cross-post.

• Gomisan's Mods Discord
• This mod's feedback and bug reports

New members should join using the invite before opening the direct post.

More From Gomisan

Valheim

• Reliable Cooking - Valheim 1.0 Workstation Compatibility Fix — Cooking conveniences that preserve Frost Foundry controls. Coming soon to Thunderstore
• Single Berserkir — One-handed Berserkir axes with a shield and all three gem upgrade paths. Coming soon to Thunderstore
• Compass Waypoints and Clock — Compass, clock and map waypoint planning. Coming soon to Thunderstore
• Reliable Crafting — Craft using materials from nearby permitted chests.
• Lumaheim - Gamma and Brightness Controls — Adjust in-game gamma and brightness.
• Usain's Belt — A configurable movement-focused utility belt. Coming soon to Thunderstore
• Crow's Nest — Climb to a ship-mounted lookout on Longships and Drakkars. Coming soon to Thunderstore
• Saga Lens - Photo Mode — Capture Valheim screenshots with photo-mode controls. Coming soon to Thunderstore
• The Fifth Beacon — Place coloured navigation beacons and lighthouse signals. Coming soon to Thunderstore
• Smuggler's Pouch — Carry a limited quantity of portal-restricted items through portals. Coming soon to Thunderstore
• Crude Chemistry — Craft throwable alchemical bombs. Coming soon to Thunderstore
• Scalpel's Skelly Staff — A staff for summoning skeleton companions. Coming soon to Thunderstore
• RPG Equipment — Additional equipment slots for your Viking.
• Reliable Smelting — Automate smelter supplies using nearby containers. Coming soon to Thunderstore
• Magic Hammer — Building assistance using nearby materials. Coming soon to Thunderstore
• Light Azeez Light — Keep supported fires and lights fuelled. Coming soon to Thunderstore

Going Medieval

• Faster Repairs — Speed up building repairs. Coming soon to Thunderstore
• Wild Crop Recovery — Recover crop seeds through wild plants. Coming soon to Thunderstore
• Wild Growth — Increase natural plant regrowth. Coming soon to Thunderstore
• Wild Orchards — Wild fruit and nut trees with harvests and saplings. Coming soon to Thunderstore

Changelog

0.2.0 — 16 October 2026

• Added Warmth and Tint controls to the existing Graphics page.
• Added Shadow detail and Highlight detail, both neutral at zero.
• Added Game, Automatic and Manual depth-of-field modes, focus distance/range, blur strength, foreground blur and quality controls.
• DOF controls immediately follow the pending Accessibility toggle without resetting values. Unused controls are disabled according to the selected mode.
• Added in-game Copy/Paste settings codes. LUMA2 includes all controls; LUMA1 imports remain supported with neutral detail values.
• Preserved live preview, OK/Back, cancellable reset, local preferences and controller navigation.
• Expanded scroll bounds so all added controls and native settings remain reachable.
• Preserved native autofocus transition speed and camera position, FOV and clipping.

0.1.0

• Initial release: Gamma, Exposure, Contrast and Saturation integrated into Valheim's Graphics page.
• Live preview, OK/Back handling, reset and local preferences.