BioWare has released the first pictures and a video of Mass Effect 3 multiplayer component called "Galaxy at War" that will allow you to create completely new characters belonging to different races of the game and deal with four-player co-op missions to reach different final victory against the Raiders. As reported in a previous news , these missions are optional and entirely separate from the campaign: who want to try only the single player experience will not have to worry about anything.

Mass Effect 3 - Multiplayer | HD version