To install mods in Mass Effect Legendary Edition, download ME3Tweaks Mod Manager, back up your game inside it, drag your mod onto its window, click Import, then select the mod and click Apply. Mods only work on PC, so this is not an option on PlayStation or Xbox.
These steps come from ME3Tweaks’ own instructions. ME3Tweaks is an unofficial fan group, and its site says EA and BioWare have no affiliation with it.
What You Need
| Requirement | Details |
|---|---|
| Game | An official PC copy of Legendary Edition. ME3Tweaks does not support pirated or cracked copies |
| Operating system | Windows 11 24H2 or Windows 10 22H2 at minimum |
| Linux | Not supported by ME3Tweaks, though it may run |
| Disk space | A backup takes up about as much room as the game, and the full game asks for 120 GB |
| Internet | Needed on the first run, and some features need it after that |
| Tool | ME3Tweaks Mod Manager, also called M3 |
Vortex, the usual Nexus Mods manager, cannot install mods for this game, so you do need M3. Mods made for the original 2007 to 2012 games do not work in Legendary Edition either, so check that a mod is built for the remaster before you download it.
M3 supports all three Legendary Edition games and the launcher. You can get it from its Nexus Mods page or ME3Tweaks’ own site. On November 8, 2026, the Nexus page had the newer version, 10.0, so start there. The multiplayer mod needs that version or later.
How to Install a Mod
- Install M3 and open it. Run it until you reach the main screen. If it has not found your game on its own, make sure the game target is set.
- Make a backup. Open the Backup and Restore menu and back up each game you plan to mod. ME3Tweaks’ own wording here is “do not skip this step,” and we would take that literally.
- Add the mod. Drag the mod download onto M3’s window. On Nexus Mods, you can also use the Download with Manager button.
- Import it. Click Import to add the mod to your library. This also turns on update checks for mods that use them.
- Apply it. Select the mod in the list and click Apply.
- Play. You do not have to launch the game through M3, but on Legendary Edition games you can turn on the autoboot option in its settings to launch the selected game from there.
Install Mods in the Right Order
Order matters for one kind of mod in particular:
- Content mods first. M3 installs these.
- Textures last. Texture mods (.mem files) must go in after all your content mods. If you add content mods after textures, the texture map falls out of sync. M3 will warn you if you try.
To install textures, use M3’s Batch Installer, which keeps the order right, or Mass Effect Modder, in M3’s Tools menu.
How to Remove a Mod
This is why the backup comes first.
If you made a backup:
- Click Manage Target to enable, disable, or delete DLC mods and restore specific files.
- Use the Restore option at the top of the main window to make your game match your backup.
If you did not make a backup: ME3Tweaks says your only reliable option is to delete the whole game folder and download it again from the EA App, Steam, or wherever you bought it. A repair or a normal reinstall will not do it, because those leave behind the extra files mods add.
Texture mods can never be uninstalled, because of how the engine works. You have to restore or redownload to get rid of them. Also, do not copy your backup folder by hand: M3 may not recognize a game restored that way.
Some Mods to Start With
These come from ME3Tweaks itself and are good first tests of the process:
- Pinnacle Station DLC: an enhanced port of the first game’s missing DLC, which is not in the collection.
- Reduced Plot Armor: adds a chance that Shepard’s plot armor fails in Mass Effect 3.
- Mass Effect 2 Legendary Edition Randomizer: a randomizer for your next Mass Effect 2 run.
- Legendary Edition Multiplayer: restores Mass Effect 3’s co-op. It installs separately, and its steps are a little different.
If you would like a smaller change, Various QOL Gameplay Tweaks is a separate hub of first-game tweaks such as field of view and Mako handling.
Before you mod your way through a long run, check how long the trilogy takes, and remember that removing a mod partway can cause trouble: ME3Tweaks warns, for instance, that saves made inside Pinnacle Station maps will crash the game if you later remove that DLC.
Can You Mod It on Xbox or PlayStation?
No. ME3Tweaks says on its Pinnacle Station page that the mod “will never be available on other platforms (as with all mods).” No mods for Legendary Edition run on PS4, PS5, Xbox One, or Xbox Series consoles. If mods are a big part of why you are buying, the PC version is the one to get.
Do Mods Disable Achievements?
We could not confirm this either way. M3’s Nexus page and its documentation do not mention achievements, and we found no statement from EA on it. The one thing ME3Tweaks does state is about its multiplayer mod, which “will not progress anything achievement related.” If achievements matter to you, finish your achievement run before you add mods, or restore from your backup first.
Frequently Asked Questions
What is the best way to install Mass Effect Legendary Edition mods? Use ME3Tweaks Mod Manager. Back up your game, drag the mod onto the window, click Import, then click Apply.
Can you use Vortex for Mass Effect Legendary Edition? No. Vortex cannot install mods for this game. Use ME3Tweaks Mod Manager.
Can you mod Mass Effect Legendary Edition on Xbox? No. Mods are for the PC version only, and the same goes for PlayStation.
Do you have to launch the game through the mod manager? No. Launch it however you normally do. There is an optional autoboot setting if you want to start it from M3.
Can you use mods made for the original Mass Effect games? No. Mods for the original trilogy do not work in Legendary Edition, and the reverse is true as well.
How do you uninstall mods? Use Manage Target to disable or delete DLC mods, or the Restore menu to match your backup. Without a backup, delete the game folder and download the game again.
Why do texture mods have to go last? They must be installed after your content mods, or the texture map goes out of sync. M3 warns you if you try it the wrong way around.