Sonic makes a speedy return in Sonic Adventure DX, which features new missions and gameplay modes. This time, Sonic must enlist the help of his friends to foil the evil Dr. Robotnik's plan to destroy Station Square and replace it with Robotnickland. As one of six playable characters, each with unique skills and abilities, you'll speed through 50 expansive levels, bonus rounds, bosses, and minigames. In your missions, you can collect objects, capture villains, and race a track to collect hidden items.