User blog comment:Inept Wiki User/Cosmos in the Lostbelt: Post-Prologue, Pre-Anastasia Information & Speculation/@comment-4802891-20180315180142

About Anastasia's identity, whereas she is Ivan's Anastasia or Nikolai's Anastasia, or even both at once:

What if she is Nikolai's daughter, and the Crypters trick Ivan into believing she is his resurrected wife? Wouldn't this calm down his paranoid insanity and avoid the Massacre of Novgorod? It would change the whole purpose of the Oprichnina though, but this could lead in a "successful branching path" for Russia.

I'm not going to question the presence of Viy yet. It could be anything, even an Outer God.