Mass Effect 3

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About this mod

Next generation mod manager for the Mass Effect Trilogy, designed for users and developers alike

Permissions and credits

ME3Tweaks Mod Manager ("M3") is a Mod Manager that supports all three Mass Effect trilogy games, and is backwards compatible with mods designed for Mass Effect 3 Mod Manager. This program is designed to make it easier to install mods for the Mass Effect series for end users.

This application was previously known as Mass Effect 3 Mod Manager, but has been fully rebuilt to support all three games as of 6.0.

ME3Tweaks Mod Manager is an end-user focused tool that is meant to simplify mod installation, uninstallation,
troubleshooting and more for mod users. It contains features that can help facilitate better communication
between the end user of a mod and the developer.

Mod Manager has always been designed to be easy to use and has been backwards compatible from day 1.

With ME3Tweaks Mod Manager, you can do the usual things from a Mod Management program:
Install mods, Uninstall mods, keep a mod library... the usual.

However, Mod Manager strives to make modding easier for everyone, end users and developers alike!

Fully localized into the following languages
- English -
- German -
- Polish -
- Russian -

End user features include
Granular Restoration Options
MixIns (Mix & Match file patches)
Automatic Mod Updates
Automatic (or manual) Installation of DLC bypass
Quick & Easy Game Diagnostics Log Sharing - EXAMPLE LOG

Developer features include
Install debugging tools with ASI Mod Manager
Automatic mod configuration based on end-user game state
Check for common problems when packaging mod for deployment
Easy DLC mod creation with Starter Kit
Conflict Detector for finding conflicts between other mods and yours
Comprehensive diagnostic collector for each game for troubleshooting

If you're a developer and wish to use the mod updater service to keep your users up to date,
drop me a message and we can discuss an arrangement. The service is free.

ME3Tweaks ModMaker is an online web application I built to make it easy (and error proof) to edit a huge swath
of gameplay variables in an easy to use point and click interface. 

To download a ModMaker mod, simply go to Mod Management, Import a mod, and select Download ME3Tweaks ModMaker mod.
Enter a mod code and Mod Manager will take care of the rest.

Requires 13GB for SFAR backups (if you choose to do them)
Requires another 20GB for a full game backup (if you choose to make one)
Requires additional space for MixIn cache and unpacked file backups.
Internet connection required for some features (ModMaker, Updates, features on demand, etc)

Works on Windows 8.1 and Microsoft-supported versions of Windows 10.
Windows 7 is NOT supported.

Mod Manager is designed to start being used when your game is vanilla.

You should first backup your games using the Backup Manager (located under Backup & Restore) so you can use
advanced features of Mod Manager and restore files in the event something goes wrong.

You can restore files and data granularly using the 'Manage Target' button. You can do a full game restore
under the Backup & Restore menu.

If you don't know what you're doing, you should use the program defaults. Do not extract Mod Manager into a game directory
or to a write protected directory, or it may not work.

If you're having issues with Mod Manager you can drop a comment here with your issue.
If you can't be bothered to read the sticky comment, I can't be bothered to give you a response.

Mass Effect 3 Mod Manager includes tools by several third parties
which can be found in the about page of the tool.

ME3Tweaks Mod Manager is open source under GPLv3 on it's Github page.
The libraries used have their own licenses.

Mod Manager has been in development since May of 2012.
I'd like to give some special thanks for people who helped make this software possible:

You, the end user

Thanks for using my software. It means a lot that I can create tools for others to use.

If you want to donate to help development, I'm OK with Nexus Membership donations. They actually help considerably as
I have to download many mods to test compatibility with many mods so I get a lot of mileage out of it.