Much has been written about Mass Effect. Heck, if you took all the pages CVG has set aside for the game over the past two years, you could build a spaceship. Not a very good one, admittedly - plainly, paper spaceships weren't made to traverse radiation belts - but you could still make one. The reason? Bioware's epic intergalactic story flagged itself up as one of the cornerstones of the 360 from the moment it was announced. Stunningly ambitious, brain-meltingly large, and market-leading in voice acting and production, it took what the Canadian development team did with Knights of the Old Republic and Jade Empire and pushed the model on - hard.