I’m not sure if it’s the wildest but the first that comes to mind is “John Dies at the End”

But do you think it has cute babies?

Super cool!

I’d like to recommend Laird Barron who mostly writes horror stories and novels. I’ve read his short story collection “The Beautiful Thing That Awaits us All” and there are some really good ones in there (along with some mediocre of course). And his novel The Croning is my favorite horror novel in recent memory. I felt like it could be adapted well into a movie, too.

Another great (very scary imo) novel is Carrion Comfort by Dan Simmons. Might be my top horror novel.

Also, I’d like to second someone else’s suggestion for Between Two Fires.