Stranger Things creators Matt and Ross Duffer have announced that a TV spin-off and stage play based on the Netflix series are officially in the works.Netflix announced on Wednesday (July 6) that the duo have formed Upside Down Pictures, a new production company where they’ll develop film and TV projects as part of their overall deal with the streaming service signed in 2019.Along with the fifth and final season of Stranger Things, there’s five other projects in development at the company. These include a live-action spin-off based on an original idea by the Duffer Brothers, which they recently described as being “1000 per cent different” to the main series.A stage play set within the world and mythology of Stranger Things is also in the works, directed and produced by Stephen Daldry (Billy Elliot, The Reader) alongside producer Sonia Friedman (The Book Of Mormon, Harry Potter And The Cursed Child).The Duffer Brothers have formed Upside Down Pictures, a new production company through which they will develop film and television projects as part of their overall deal with Netflix.