Stranger Things season 4 will have a variety of movie influences, including Bill & Ted. Netflix confirmed on September 30 that season 4 of their beloved sci-fi series would be returning. Though an official release date is yet to be set, a teaser trailer revealed that the new season could be exploring some new locations outside of Hawkins, Indiana. Considering how season 3 ended with the show's main characters going their separate ways, along with an end credit scene that showed the Russian's involvement with the Upside Down, it's clear that season 4 will be expanding in some exciting ways.

Stranger Things' renewal was also announced alongside news that the show's creators, Matt and Ross Duffer, signed a multi-year deal with Netflix to develop more original content. This new deal with the streaming service made a world of sense, considering the success of Stranger Things' first season in 2016 was an unexpected surprise. The hit series draws inspiration from the likes of Steven Spielberg, John Carpenter, and even Stephen King. It quickly became a phenomenon and has relished in its 80s-set time period over the years. Even though season 4 is a long way out, Stranger Things' writers are promising more references for later on down the line.

Related: Stranger Things: 5 Things We Hope To See In Season 4 (& 5 Things We Don't)

The Stranger Things writers took to Twitter to share that they're starting a weekly trend called Video Story Fridays. They explained that "every Friday, [they] will list 5 movies the writers talked about during the week." They also added that each movie "relates in some way" to season 4. The first five movies were The Peanut Butter Solution, The Fisher King, You've Got Mail, Ordinary People, and Bill and Ted's Bogus Journey.

What's interesting about all of these choices is that they don't all take place in the same year. The Peanut Butter Solution was released in 1985, The Fisher King in 1991, You've Got Mail in 1998, Ordinary People in 1980, and Bill & Ted's Bogus Journey in 1991. Considering that the idea of time travel has been tossed around in regard to season 4, it makes sense that they'd be referencing pieces of entertainment from a variety of different years. Not to mention, both Bill & Ted movies deal with time travel, so that could also be a hint.

Even though time travel hasn't officially been confirmed by the Stranger Things writing team, these movie choices sure do raise a lot of questions. They don't span a massive amount of time, but they do cover a significant amount of ground for the show. Considering Ordinary People's release date, that would give the characters an opportunity to go back in time to possibly figure out the origins of the Upside Down prior to season 1, which took place in 1983. If fans really wanted to dig into speculation, there's also a possibility that the end credit scene of season 3 could have taken place in the future. So, if time travel is involved, then that scene could be taking place in 1998, during the release of You've Got Mail. Unfortunately, only time will tell how these movies all relate to season 4, but it's fun to further fuel the idea of time travel. Although it's sometimes a messy and complicated concept to work with in movies or television, the use of it in Stranger Things opens up a brand new world of possibilities.

Next: Stranger Things Theory: Eleven Is Season 4's Villain

Source: Stranger Writers/Twitter