?Mass Effect? is a science-fiction action and role-playing game (RPG) created by BioWare, the commercially and critically acclaimed RPG developer of ?Jade Empire?? and ?Star Wars?: Knights of the Old Republic?.? ?Mass Effect? will deliver an immersive, story-driven gameplay experience with stunning visual fidelity. Published by Microsoft Game Studios, ?Mass Effect? is an exclusive title for the Xbox 360 video game system.