Time is up-the WORLDS UNITE crossover event is almost upon us! "A Ray of Hope": As Sonic and the Freedom Fighters continue their journey to save the shattered planet, Sonic and Chip journey to Apotos to uncover the secrets of the Gaia Gate! Meanwhile, Knuckles and the Freedom Fighters take on a TITANIC challenge of their own! Does Sonic have a hope in saving the world? Will battle tear the freedom fighters apart first? Find out the answers to these and more exciting questions as our heroes journey to the much-awaited crossover event of the year-WORLDS UNITE! Featuring new cover art from Edwin Huang (Uncanny Skullkickers) and a crazy-new Metal Sonic game art variant provided by Sega!