In Sonic the Hedgehog's most recent fast-paced adventure, worlds are colliding. Discover the secrets of an ancient civilization's ruins that were overrun by robotic hordes. Sonic finds himself stranded on an ancient island full of strange creatures while searching for the missing Chaos emeralds. As you explore an amazing world of action, adventure, and mystery, you will encounter hordes of formidable adversaries. Race across the five enormous Starfall Islands to reach new heights and feel the exhilaration of open-zone, high-velocity platforming freedom. Leap into adventure, use the Ancients' power, and engage in combat to defeat these new, enigmatic enemies. Welcome to the Sonic game evolution.