Fractured Echoes

When a comet shatters time itself, scattering eras across a ruined Earth, he awakens to a world where dinosaurs clash with cowboys and Roman legions march on cyberpunk cities. Armed with only his wits and a professor's knowledge, can he navigate this fractured reality, master the comet's power, and unite warring factions? Or will the echoes of the past and whispers of the future consume him, leaving this new world lost to time?