Mass Effect Legendary Edition Finally Gets Co-op Back on PC

Nov 10, 2026 - 02:08

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Mass Effect Legendary Edition Finally Gets Co-op Back on PC

Published Nov 9, 2026, 4:00 PM EST

Squad up for the next wave

Part of the cast of Mass Effect 2 charging forward.

Mass Effect 3’s co-op mode put four players on a map, each with a class and a race, against waves of Cerberus, geth, Reapers, or Collectors. In the original trilogy, it was the only Mass Effect you could play with friends. When Mass Effect Legendary Edition compiled and remastered the games in 2021, that co-op mode didn’t make the cut. Project director Mac Walters said in 2021 that the team’s focus in releasing Legendary Edition was on the single-player experience…and that at some point the team had to draw the line. This year, that changed.

Legendary Edition Multiplayer, a free download from the modding team ME3Tweaks, both restores that missing co-op mode and adds new ways to play the game. After installing the mod, boot it up, and you’ll get a world of quality of life improvements, new content, and glitch fixes:

You can pick from three new heavy weapons, the Reaper Blackstar, Blackstorm, and Cain, or skip the heavy weapon for extra ammo and speed.
You can set your own field of view and aim assist in-game, and use a controller in every interface.
You can try two new wavelists: Coalition sends a random enemy faction each wave, and Unified sends random enemy waves that scale as you go.
You can check pings and who’s downed from the pause menu, and teammates’ names turn shades of red when their shields are down.
If Krogan Rage or Hunter Mode ever blinded you, you can tone those screen effects down, along with Bloodlust and Repair Matrix, in Options > Accessibility.
Three hazard maps changed: Hazard Giant now plays at night with flashlights, you can shoot Reactor Hazard’s buttons to set off the reactor, and Glacier Hazard’s bees react to enemy damage, too.
The ticker no longer says you were executed when you weren’t, and enemies can’t stroll through Reactor Hazard’s closed doors.
The team also improved the textures and lighting and added a splash menu that showcases each map.

You’ll need a PC copy of Legendary Edition with an unmodded Mass Effect 3. Because the mod lives apart from your trilogy, setup takes a few more steps than a typical mod. ME3Tweaks says it won’t interact with the original game at all, so your settings, saves, and mods stay fully separate. To install it, download ME3Tweaks Mod Manager 10.0 or higher, import both the Launcher Mod and the main mod from Nexus, and click Install LMP. To import your Mass Effect 3 profile, run Legendary Edition once first, or EA App cloud sync may flag a conflict. Then launch from Steam, the EA App, or Mod Manager.

Shepard runs from reapers with Garrus and Liara in Mass Effect 3

ME3Tweaks has been building toward an N7 Day mod release for months. The team has released mods on N7 Day before, including Pinnacle Station in 2021, a combat-focused DLC for the first Mass Effect that the remaster left out because its source code was lost. The team isn’t done working, either: We can look forward to at least three further content packs, including a Redemption map pack with remade multiplayer maps and one with the Rejection enemy faction.

But for now, with the restored co-op mode, we’ve got our hands full. Bring three friends, generate an invite from the pause menu, then pick a heavy weapon (or skip it for the extra ammo and speed). See how long your squad can hold the line. Co-op is back in Legendary Edition, and it’s a good thing, too. The Reapers have waves waiting.

Mass Effect Legendary Edition is available to play on PS4, PS5, Windows PC, and Xbox Series X/S. Find the latest install and joining instructions for this co-op mod on the Legendary Edition Multiplayer page.

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