Today, Microsoft Game Studios and BioWare Corp. announced that the highly anticipated action role-playing game (RPG) "Mass Effect" will ship to retailers throughout North America on November 20, 2007. The recipient of more than 50 awards, including the 2007 Game Critics Awards for "Best Console Game" and "Best RPG" at the Electronic Entertainment Expo last month in Los Angeles, "Mass Effect" is poised to become the must-play RPG of 2007.