Sonic and company are back and better than ever in Sonic Adventure 2: Battle for Nintendo GameCube. Dr. Eggman is up to his old tricks, and it's up to Sonic, Tails, and Knuckles to stop him yet again. Two new playable characters enter the Sonic universe -- a mysterious dark hedgehog called Shadow, and a jewel-thieving bat named Rouge. In the single-player mode, you'll go through more than 30 unique stages, which include everything from a forgotten pyramid, an abandoned military base, and a giant space station. Sonic Adventure 2: Battle features faster action, all-new two-player games, and a branching storyline that lets you choose to save the world as the Hero side, or conquer it as the Dark side.