In 50 years, the Goosebumps series will be studied in school literature courses.Whole doctoral theses will be written on how these stories are masterpieces of the horror genre ranking with Edgar Allan Poe's work and The Martian Chronicles.
I Live In Your Basement is the REAL end to the Series.The REAL Twist is that the Entire Series is All Just a Dream by Keith. Anything written after that is just more dream scenes.
All Goosebumps titles exist in a multiverse like The Dark Tower.The mascot Curly can travel between worlds a la Rod Sterling. He was the voice saying "Goosebumps, viewer beware you're in for a scare" in the opening theme of the TV show.
The Series is meant to be a Parody of the Horror GenreIt makes sense. Doesn't it?
The girl on the front of The Curse of Camp Cold Lake is meant to be Sarah, not DellaShe fits the description of Sarah a lot better along with being perfectly opaque, unlike see-through Della. And the surface looks like clammy cold white skin more than bone. Perhaps Sarah was killed by the snake, her body dumped in the lake to hide the evidence, but whatever magic was in the lake kept her from decomposing too much and somehow her soul stayed with her body/corpse and we got what we see on the cover today. As a result, she'll either be Nightmare Fuel or Fetish Fuel or perhaps just Ugly Cute in her own way.
The world where "Attack of the Mutant" takes place is Earth-Prime.The creator of the Masked Mutant is psychically tuned to the Mutant's universe, what he thought was his imagination was actually events that really happened. The Masked Mutant created an interdimensional portal which sent him to Skipper's world.
The body-switch agency in "Why I'm Afraid of Bees" does actually illegal experiments with humans.The reason there is no money involved is that they just want to test the switching method to make money later on. Of course this is forbidden, so they aim on kids who are naive enough not to ask and of course don't ask for their parent's permission.