Mod Organizer 2
github.com
What it is
Mod Organizer 2 is a free, open-source Windows tool for managing game mod collections through a virtualized setup. It supports installing and uninstalling mods, organizing profiles, detecting conflicts, and automatic updates. The project describes it as a tool for people who experiment with mods and says it can handle collections of arbitrary size. Supported games include 64-bit titles such as Skyrim Special Edition and Fallout 4, along with the 32-bit games supported by Mod Organizer 1. Its basic games plugin can detect installations from Steam, GOG, Origin, Epic Games or Legendary, and EA Desktop. A mod data checker can identify and correct archive layouts for automatic installation. Downloads are available through GitHub Releases and Nexus Mods; the installer can also create a portable installation. Version 2.5.0 requires Windows 10 1809 or newer, or Windows 11. The virtual filesystem does not work with Windows Store or Gamepass packaging, so those versions of otherwise supported games are not usable. The community-maintained project is licensed under GPL-3.0.
Spec sheet
- Purpose
- Mod Organizer is a tool for managing mod collections of arbitrary size and installing or uninstalling mods.Read 30 Sep 2026 · github.com
- Free plan
- YesRead 20 Sep 2026 · github.com
- Support
- Issues are reported through the GitHub page or the open Discord server, which is also used for dev-build testing, bug investigation and suggestions.Read 30 Sep 2026 · github.com
- Software license
- The repository uses the GPL-3.0 license.Read 28 Sep 2026 · github.com
- Automatic updates
- YesRead 20 Sep 2026 · github.com
- Billing details
- No pricing or billing terms are stated in the provided pages.Read 28 Sep 2026 · github.com
- Build instructions
- Build instructions are provided through the Modorganizer2/mob project.Read 28 Sep 2026 · github.com
- Collection size
- It supports mod collections of arbitrary size.Read 28 Sep 2026 · github.com
- Community project
- Mod Organizer 2 is an open project maintained by the community and is seeking developers and contributors.Read 30 Sep 2026 · github.com
- Community support
- Users can join the open development Discord server for information and involvement.Read 28 Sep 2026 · github.com
- Completion status
- The project was not completed and was left with many issues.Read 28 Sep 2026 · github.com
- Conflict detection
- YesRead 20 Sep 2026 · github.com
- Deployment method
- virtualRead 20 Sep 2026 · github.com
- Development workflow
- The Discord is used to test dev builds, investigate bugs, and discuss suggestions.Read 28 Sep 2026 · github.com
- Documentation
- The project states that its documentation is sparse and points users to a Mod Organizer 1 wiki for general information with caution about differences.Read 30 Sep 2026 · github.com
- Download sources
- Downloads are available on GitHub.com and NexusMods.com.Read 28 Sep 2026 · github.com
- Downloads
- The project provides downloads through GitHub Releases and Nexus Mods, with the installer usually preferred for ease of installation.Read 30 Sep 2026 · github.com
- Game launcher integrations
- The basic games plugin can detect games installed through Steam, GOG, Origin, Epic Games or Legendary, and EA Desktop.Read 30 Sep 2026 · github.com
- Game support
- Mod Organizer 2 supports 64-bit games such as Skyrim Special Edition and Fallout 4, as well as the 32-bit games supported by MO1.Read 30 Sep 2026 · github.com
- Issue reporting
- Issues can be reported on GitHub or the open Discord server.Read 28 Sep 2026 · github.com
- Mod installation
- The basic games plugin includes a mod data checker that can check and fix different mod archive layouts for automatic installation.Read 30 Sep 2026 · github.com
- Mod management
- It provides an easy and reliable way to install and uninstall mods.Read 28 Sep 2026 · github.com
- Mod profiles
- YesRead 20 Sep 2026 · github.com
- Mod source access
- built-inRead 20 Sep 2026 · github.com
- Open source
- The Mod Organizer repository is public and licensed under GPL-3.0.Read 30 Sep 2026 · github.com
- Platform scope
- It is described as a mod manager for various PC games.Read 28 Sep 2026 · github.com
- Portable installation
- The installer can also be used to create a portable Mod Organizer 2 installation.Read 30 Sep 2026 · github.com
- Pricing page
- The repository pricing page is unavailable.Read 28 Sep 2026 · github.com
- Product type
- Mod Organizer is a tool for managing mod collections.Read 28 Sep 2026 · github.com
- Project credits
- The page credits Tannin, LePresidente, Silarn, erasmux, and many others.Read 28 Sep 2026 · github.com
- Project status
- The project is open and community-maintained.Read 28 Sep 2026 · github.com
- Release features
- Recent releases added BSA archive file preview when the corresponding plugin supports it.Read 30 Sep 2026 · github.com
- Repository structure
- MO2 consists of multiple GitHub repositories that mob downloads as required.Read 28 Sep 2026 · github.com
- Store limitation
- Mod Organizer 2 cannot support Windows Store or Gamepass versions of supported games because its virtual filesystem is incompatible with their packaging.Read 30 Sep 2026 · github.com
- Supported games
- MO2 supports 64-bit games such as Skyrim Special Edition and Fallout 4, plus MO1's 32-bit games.Read 28 Sep 2026 · github.com
- Supported platforms
- windowsRead 20 Sep 2026 · github.com
- Target users
- It is designed for people who experiment with mods.Read 28 Sep 2026 · github.com
- Translation support
- Community members can help translate MO2 through the Discord translation channel.Read 28 Sep 2026 · github.com
- Virtualization
- The Mod Organizer 2 development team describes it as a virtualized mod management tool for Bethesda games.Read 30 Sep 2026 · github.com
- Windows requirement
- Version 2.5.0 requires Windows 10 1809 or newer, or Windows 11, because of its Qt 6 and Python 3.11 upgrade.Read 30 Sep 2026 · github.com
Plans and prices
Mod Organizer 2 Free Windows 10 1809+ or Windows 11 · Windows Store/Gamepass versions unsupported Read 30 Sep 2026 · github.com
Strong points and limits
Strong points
- Free and open source under GPL-3.0.
- Supports profiles and conflict detection.
- Manages collections of arbitrary size.
- Detects games from several listed launchers.
- Installer can create a portable installation.
Limits
- Requires Windows 10 1809 or newer, or Windows 11.
- Windows Store and Gamepass game versions are unsupported.
- Documentation is described as sparse.
Who it suits
It suits Windows players who experiment with supported game mods and want separate profiles or conflict detection. It is not suitable for supported games installed through Windows Store or Gamepass.
Verdict
Mod Organizer 2 offers virtualized mod management for a broad set of listed PC games and launcher installations. Check the Windows requirement and game-store limitation before setting up a collection.
Where Specifiction places it
- Game Mod Managers#9 of 798.6
- Mod managers#10 of 788.5