While on a springtime run, Sonic stumbles upon a Chao Garden with a problem: they’ve got a Chao egg that won’t hatch, and a bossy Shadow Chao who intends to ...

In 2013 the world was devastated by an apocalyptic event, annihilating almost all mankind and turning the Earth's surface into a poisonous wasteland. A handful of survivors took refuge in the depths of the Moscow underground, and human civilization entered…