Amazon.com has Mass Effect 3 for Nintendo Wii U at $11.44. Get free shipping with Prime or if you spend $35 or more. Mass Effect 3 plunges you into an all-out galactic war to take Earth back from a nearly unstoppable foe – and how you fight that war is entirely up to you. Groundbreaking interactive storytelling drives the heart-pounding action in which each decision you make could have dire and deadly consequences. You are Commander Shepard, the only one who can save Earth from annihilation.