However, viewers were kept in the dark until season five's second batch of episodes, now streaming on Netflix.

The Upside Down has always felt like the heart of ‘Stranger Things‘. It looks like Hawkins, but something is clearly off.

Just when we thought we've cracked the code on everything that was going on in Stranger Things, the Duffer Brothers and the ...

After keeping us in the dark for almost 10 years, Stranger Things has finally revealed what the Upside Down actually is – and ...

"Stranger Things" Season 5, Volume 2 finally reveals the origins of the Upside Down. Here’s how the wormhole works, what the ...

Just what is The Upside Down in Stranger Things‘ world? The truth is that we still don’t know in full. After four seasons of the show, we know how Vecna became a part of The Upside Down and how that ...