Mass Effect 2 is the sequel to BioWare's hit space-based role-playing game (RPG), Mass Effect. A single player adventure, Mass Effect 2 allows players to continue the adventures of the fully customizable series hero Commander Shepard, as you take on a whole new adventure and a new cast of supporting characters. Additional new features include the ability to import game save files from the original Mass Effect game to continue the adventure in an unbroken fashion, a new damage system, a new, more flexible dialogue game mechanic and more.