The game is different because the character you make is you, yourself.
From the post:
Fantasy Flight Games is proud to announce the upcoming release of Wrath of the Gods, the second book in The End of the World roleplaying line!
Strange humanoid creatures, stinking of seaweed, shamble out of Earth’s oceans as a mind-breaking horror rises from R’lyeh. The massive wolf Fenrir awakens beneath the Scandes mountain range as Jörmungandr, the world-serpent, writhes out of the Pacific. Earthquakes shake the world as Earth itself attempts to eradicate mankind. The supernatural has become irrevocably intertwined with the physical, and you’ll need all of your skills and talents just to survive for another day. The world will shake beneath the Wrath of the Gods!
Like the other books in The End of the World roleplaying game line, Wrath of the Gods offers you a one-of-a-kind opportunity – the chance to play as yourself amidst the tumult and terror of the world’s ending. Five distinct scenarios offer different ways the world might end as ancient deities return to save or destroy humanity. With a unique scenario structure, dozens of possible adversaries and encounters, and an elegant, narrative rules system, Wrath of the Gods pulls you as close as you can (safely) come to the end of life as we know it.