In this new standalone campaign, Black Doom has reemerged and threatens to take over the world. Shadow must journey into his past, confront his memories, and unlock new dark powers to save the world.

Worlds are colliding in Sonic the Hedgehog's newest high-speed adventure! Accelerate to new heights, battle hordes of powerful enemies, and experience the thrill of high-velocity, open-zone acrobatic action and platforming freedom across the five massive Starfall Islands. Welcome to the evolution of Sonic games!

The iconic Alex Kidd is back! Jump straight back into miracle world and experience it like you've never seen before. Complete with new HD graphics, gameplay improvements and animations, rediscover all the levels from the original game, as well as brand new levels which expand the lore and story behind Alex Kidd. Destroy the evil Janken the Geat and rescue the people of Radaxian once and for all! The world needs a hero--what are you waiting for?