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Stellar Mod Loader

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What Stellar Mod Loader is

Stellar Mod Loader is a free mod manager for Windows and Linux, including native Steam Deck support. It is built for games such as Oblivion, Skyrim, Fallout titles, and Starfield. Users can manually import mods, detect conflicts, and add, reorder, rename, disable, or remove mods and plugins. Profiles switch between games and mod loadouts; base profiles can pass mods, plugins, and configuration files to other profiles. Each profile can manage configuration files, save files, and archive invalidation. Stellar supports FOMOD installers, describes BAIN-style packaging support, and handles root mods such as ENBs, script extenders, DLSS injectors, and other injectors. Built-in definitions cover listed Oblivion, Skyrim, Fallout, and Starfield versions, while custom game definitions can be created, imported, and exported. Steam, UWP/Game Pass, and other game versions are supported. A command line can activate a named profile and launch a game or custom action. 7-Zip is required.

Who it suits

Stellar suits Windows or Linux players who maintain multiple modded games and want separate loadouts, profile data, and conflict detection. It also fits users managing custom game definitions or root-level injectors.

What it does well

  • Free Windows and Linux mod manager
  • Profiles switch games and loadouts
  • Conflict detection included
  • Supports FOMOD and BAIN-style packaging
  • Steam Deck support is listed

What to know first

  • Requires 7-Zip installation
  • Mods require manual importing
  • Linux users need the included AppArmor setup
  • No free trial is listed

Verdict

Stellar provides broad profile, plugin, installer, and game-definition controls at no cost. Its setup requirements and manual import workflow should be considered before use.

Facts from Stellar Mod Loader's own pages

CLI
The command line can activate a named profile and launch the game or a specified custom action. · github.com, 11 Oct 2026
Conflict detection
Yes · github.com, 20 Sept 2026
Custom games
Users can define, import, and export custom game definitions to add support for games without built-in definitions. · github.com, 11 Oct 2026
Deployment method
link · github.com, 20 Sept 2026
File management
Stellar supports per-profile management of config files, save files, and archive invalidation. · github.com, 11 Oct 2026
Free plan
Yes · github.com, 20 Sept 2026
Games
Built-in game support includes Oblivion, Skyrim, Fallout 3, Fallout 4, Fallout: New Vegas, and Starfield. · github.com, 11 Oct 2026
Game storefronts
The README says Stellar supports Steam, UWP (Game Pass), and other versions of games. · github.com, 11 Oct 2026
Game support
Built-in game support includes Oblivion, Oblivion Remastered, Skyrim LE, SE and VR, Fallout 3, 4 and 4 VR, Fallout: New Vegas, and Starfield. · github.com, 11 Oct 2026
Installation requirement
The installation instructions say 7-Zip must be installed to use Stellar. · github.com, 11 Oct 2026
Installers
Stellar supports FOMOD installers and describes support for BAIN-style mod packaging. · github.com, 11 Oct 2026
License
The repository lists the GPL-3.0 license. · github.com, 11 Oct 2026
Linux setup
Ubuntu and Ubuntu-based Linux users are instructed to run the included AppArmor profile installation script. · github.com, 11 Oct 2026
Mod management
Users can add, reorder, rename, disable, and remove mods and plugins. · github.com, 11 Oct 2026
Mod profiles
Yes · github.com, 20 Sept 2026
Mod source access
manual import · github.com, 20 Sept 2026
Per-profile data
Profiles can manage config files, save files, and archive invalidation. · github.com, 11 Oct 2026
Platforms
The project describes native clients for Windows and Linux, including Steam Deck. · github.com, 11 Oct 2026
Profiles
Profiles let users switch between games and mod loadouts, while base profiles let other profiles inherit mods, plugins, and config files. · github.com, 11 Oct 2026
Purpose
Stellar is a mod manager for Windows and Linux for games including Fallout, Oblivion, Skyrim, and Starfield. · github.com, 11 Oct 2026
Requirement
7-Zip must be installed to use Stellar. · github.com, 11 Oct 2026
Root mods
Root mod support lets users manage ENBs, script extenders, DLSS injectors, and other injectors in a profile. · github.com, 11 Oct 2026
Security
The repository is marked as licensed under GPL-3.0; the opened project pages make no security or compliance claims. · github.com, 11 Oct 2026
Steam Deck
The project describes its native Windows and Linux clients as including Steam Deck support. · github.com, 11 Oct 2026

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