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Mod Organizer 2
What it is
Mod Organizer 2 is a free, open-source Windows tool for managing mod collections through virtualized mod management. It provides profiles, conflict detection, built-in mod source access, and automatic updates, and is designed for people who experiment with mods. It supports 64-bit games such as Skyrim Special Edition and Fallout 4, along with the 32-bit games supported by Mod Organizer 1. The basic games plugin can detect installations from Steam, GOG, Origin, Epic Games or Legendary, and EA Desktop. Its mod data checker can identify and fix 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 versions of supported games. The project is community-maintained and licensed under GPL-3.0, with issues and development discussion handled through GitHub and Discord.
For and against
For
- Free and open-source under GPL-3.0.
- Supports mod profiles and conflict detection.
- Can manage collections of arbitrary size.
- Installer can create a portable installation.
Against
- Requires Windows 10 1809+ or Windows 11.
- Windows Store and Gamepass game versions are unsupported.
- Project documentation is described as sparse.
The verdict
Mod Organizer 2 offers virtualized mod management for supported Windows games, with profiles and tools for installing mod archives. Check the Windows requirement and game-store limitations before using it.
Who it suits
Mod Organizer 2 is for Windows users who experiment with mods for supported PC games. It may suit people who want virtualized management of mod collections and profiles.
Plans and prices
Mod Organizer 2
Windows 10 1809+ or Windows 11 · Windows Store/Gamepass versions unsupported
Read 30 Sep 2026 · github.com
On the record
- Automatic updates
- Yesgithub.com · read 20 Sep 2026
- Billing details
- No pricing or billing terms are stated in the provided pages.github.com · read 28 Sep 2026
- Build instructions
- Build instructions are provided through the Modorganizer2/mob project.github.com · read 28 Sep 2026
- Collection size
- It supports mod collections of arbitrary size.github.com · read 28 Sep 2026
- Community project
- Mod Organizer 2 is an open project maintained by the community and is seeking developers and contributors.github.com · read 30 Sep 2026
- Community support
- Users can join the open development Discord server for information and involvement.github.com · read 28 Sep 2026
- Conflict detection
- Yesgithub.com · read 20 Sep 2026
- Deployment method
- virtualgithub.com · read 20 Sep 2026
- Development workflow
- The Discord is used to test dev builds, investigate bugs, and discuss suggestions.github.com · read 28 Sep 2026
- 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.github.com · read 30 Sep 2026
- Downloads
- The project provides downloads through GitHub Releases and Nexus Mods, with the installer usually preferred for ease of installation.github.com · read 30 Sep 2026
- Download sources
- Downloads are available on GitHub.com and NexusMods.com.github.com · read 28 Sep 2026
- Game launcher integrations
- The basic games plugin can detect games installed through Steam, GOG, Origin, Epic Games or Legendary, and EA Desktop.github.com · read 30 Sep 2026
- 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.github.com · read 30 Sep 2026
- Issue reporting
- Issues can be reported on GitHub or the open Discord server.github.com · read 28 Sep 2026
- Software license
- The repository uses the GPL-3.0 license.github.com · read 28 Sep 2026
- Mod installation
- The basic games plugin includes a mod data checker that can check and fix different mod archive layouts for automatic installation.github.com · read 30 Sep 2026
- Mod management
- It provides an easy and reliable way to install and uninstall mods.github.com · read 28 Sep 2026