
After four seasons spread out over almost 10 years, Stranger Things creators Matt and Ross Duffer are finally ready to explain the mysterious origins of the Upside Down.
“When we pitched to Netflix, we knew that they weren’t interested in a limited series, so when we were making season one, we knew that in success, it would continue, and so we purposely held back certain mysteries," Ross told SFX Magazine. "The biggest one from season one was about what the Upside Down actually is, which is something we’ve known now for almost 10 years. We’ve thought about revealing it every time we write a season, and we just kept holding it back and holding it back. It was exciting this season to be able to finally reveal what the Upside Down is, and it plays a huge role in the narrative, that final mystery of what it is, and what it all means.”