ME3Tweaks, a modding group, released a remastered multiplayer mod for Mass Effect 3 on PC for the Legendary Edition after three years of development. The original Mass Effect 3 multiplayer mode was excluded when the Legendary Edition launched in 2021.
Modder Mgamerz started the project, called Project Milan, after completing a randomizer mod for Mass Effect 2's remaster. He drew inspiration from porting an unused Citadel level from Mass Effect 1's remaster, then attempted to port multiplayer maps. By December 2023, the team had a working prototype where players could pick a kit, spawn enemies, and earn points, though audio and shaders were broken at that stage.
The mod goes beyond recreating the original 2012 multiplayer. ME3Tweaks added new game modes: Coalition cycles through different enemy factions each wave, and Unified mixes enemies from all groups together. The team adjusted the loot box progression system to give players options on how much they want unlocked at the start, from a full grind to receiving credits or one of every item to level up.
Mgamerz cited improved modding tools in the Legendary Edition as crucial to the project's feasibility. BioWare shared technical information about how DLC mounting works before the remaster's 2021 launch, providing infrastructure the team built upon over years of development. Mgamerz broke his arm during the three-year effort, which caused delays.
The mod supports private servers independent of BioWare's infrastructure, allowing players to host with friends. This gained relevance after EA closed BioWare on October 21. The N7HQ stats tracking website was lost, raising concerns about official Mass Effect 3 multiplayer servers' future. While Mgamerz said the project wasn't originally intended as preservation, it has become one following BioWare's shutdown.
New cosmetics are included, such as banners from the cancelled Mass Effect: Universe. A direct credit store is planned but won't launch with the mod.