Sonic: Nazo Unleashed (2005)

The Chaos Emeralds possess both Positive and Negative qualities. When the negativity becomes too great, the being that is Nazo is said to be born from the darkness, unleashing it’s wrath upon the world. Light, alone, cannot shine on this darkness. It is not until the Light and the Shadow unite to rid the world of the new darkness….. And so, the battle begins…..