Return to the excitement of the days of Sega Genesis with this comprehensive collection of more than 40 classic titles. Experience the frenetic thrills of Sonic the Hedgehog, the underwater challenge of Ecco the Dolphin and many more, whether you're reliving the fun of childhood or discovering them for the first time. With this massive compilation, you'll find a game to suit every mood and every player.Sonic's Ultimate Genesis Collection evokes the fun of classic Sega Genesis titles with a modern twist. The games' old-school 2D style has been upgraded to 720p high definition, adding new depth to familiar gameplay as you make your way through the various landscapes using the intuitive controls of your Xbox 360. Dive into the fun of titles like Streets of Rage, Columns, the Phantasy Star series and more, and unlock arcade favorites from the Sega vaults, including Congo Bongo and Zaxxon. Prove your skills against hordes of enemies, ranging from Sonic's nemesis, Dr. Eggman, to shuriken-flinging ninjas, and even bring a friend in on the excitement as you share the fun of select two-player classics.