From GameWatcher: “Mass Effect 3 now has a considerably substantial modding scene, if the Priority: Earth Overhaul mod is anything to go by. As its name might suggest, the goal of this mod is to rework, improve, and expand upon the final mission of the game.
Impressively, the author of Priority: Earth Overhaul has managed to do so by incorporating all-new cutscenes, features, additions, and events. Best of all, this isn’t an early work-in-progress, either, as the mod has just been completed.”
Source: N4G PC Mass Effect 3 gets huge Priority: Earth Overhaul Mod