Aquatic plants grow from glacier skies and colorful, bioluminescent fish light the seafloor. A new species prospers in this new golden age of life. They are the Tuai, descended from birds and successors of the dinosaurs. The superior intellect and unique metabolism they evolved over millions of years secured their prosperity in this icy environment. The great Ice Age that nurtures this bountiful ecosystem will survive for as long as the Everwinter persists. Play as a Tuai fighting against that which has come to threaten the Everwinter.