Mass Effect 3's elusive co-op multiplayer mode officially has a trailer. The cinematic feat demonstrates how up to four gamers can work together to save the galaxy, 11-waves of enemies at a time.
Many questions about ME3 co-op have been answered. Gamers will be able to customize their character's appearance and weapon loadout. I'll be the hot pink, female Krogan, wreaking havoc on everyone in sight.