The ME3Tweaks team has released the Legendary Edition Multiplayer mod, restoring the original Mass Effect 3 cooperative multiplayer content to Mass Effect: Legendary Edition. The Legendary Edition, launched in 2021, includes the single-player campaigns and related story content from the trilogy but did not bring back the multiplayer mode from the third installment.
Development on this project began secretly in 2023. The team first established level porting capabilities, then addressed differences in audio engines, shaders, textures, and lighting. Developers also re-baked levels using a new lighting scheme, improved the quality of some models and textures, redid the UI, added HDR and controller support, and enhanced networking, server synchronization, and fixed numerous bugs.
The mod adds a Unified mode, allowing enemies from factions such as the Geth, Reapers, and Cerberus to appear together in the same match, along with new waves like Coalition. Players can either use the servers provided by the team for matchmaking or opt for private servers.
The Legendary Edition Multiplayer mod is available for free, but users must own Mass Effect: Legendary Edition. The installer extracts necessary assets from the legitimate game and generates a relatively standalone multiplayer copy. The team stated that compatibility with other mods will be limited during the initial launch to reduce issues affecting multiplayer functionality, and they plan to maintain the project long-term. The team also confirmed that BioWare's closure did not affect the originally scheduled N7 Day release.