O nce upon a time, every new superhero movie seemed to exist in (not-so) splendid isolation. Michael Keaton's Batman never 6️⃣ met Christopher Reeve's Superman, despite the cities of Gotham and Metropolis being situated less than 300 miles apart in many 6️⃣ DC comic book tales. When Sony's Spider-Man found himself under threat from the likes of the Green Goblin, Doc Ock 6️⃣ and even a nefarious Symbiote in the early to mid-noughties Tobey Maguire films, he did not dial up Iron Man 6️⃣ or send an email into space for the attention of one Thor Odinson of Asgard – because those characters were 6️⃣ inconveniently owned by someone else. Only in the comics was Ant-Man likely to bump into the Hulk, or Mister Fantastic 6️⃣ make the acquaintance of Captain America.

It was Marvel Studios, beginning with 2012's The Avengers, that popularised a brave new world 6️⃣ of interconnected superheroes who, in many ways, broke all the rules of superhero film-making. Suddenly, heroes and villains were capable 6️⃣ of extended, multiple episode character arcs that added a richness and realism to proceedings that had rarely been seen before. 6️⃣ Iron Man might just have invented time travel, but on a psychoanalytic level he felt like a real person capable 6️⃣ of genuine human emotions, soaring success, abject failure ... ahem, casual sexism ... and everything in between. Each new superhero 6️⃣ to emerge fully formed into the Marvel multiverse felt intelligently connected to all the others, ripples in the fabric of 6️⃣ reality in one corner of the multiversal web somehow affecting matters somewhere else entirely in unexpected ways (at least until 6️⃣ the more recent, weaker films).

All of which might leave us wondering exactly why Marvel supremo Kevin Feige has just revealed 6️⃣ that the new Fantastic Four film, in which Reed Richards, the Invisible Woman, the Human Torch and the Thing are 6️⃣ about to debut for Marvel movies, will take place (at least initially) somewhere that does not seem to be in 6️⃣ the MCU at all. Speaking on the latest episode of the Official Marvel Podcast, Feige confirmed suggestions that the film 6️⃣ will be set in the 1960s, but hinted heavily that this will be a very different version of 20th-century. terrestrial 6️⃣ reality to any we've yet seen.

"It is a period film," said 6️⃣ Feige. "There was another piece of art we released with Johnny Storm flying in the air, making the 4 symbol 6️⃣ and there was a cityscape in the corner of the image. And there were a lot of smart people who 6️⃣ noticed that the cityscape doesn't look exactly like the New York that we know or the New York that existed 6️⃣ in the '60s in our world. Those were smart observations."

This is nothing new for Marvel, in a sense. The advent 6️⃣ of alternate realities in episodes such as Spider-Man: No Way Home and Doctor Strange in the Multiverse of Madness, not 6️⃣ to mention the TV series Loki, means we're used to seeing our heroes jumping from one universe to the next. 6️⃣ Moreover, the absence of the Fantastic Four from the MCU would explain why nobody has ever mentioned them up until 6️⃣ now. And yet if Feige really is hinting that the team will begin their journey in a different universe to 6️⃣ the Earth 616 we've become used to, and which so closely resembles our own without the superheroes, this is still 6️⃣ something new and different.

Rather than starting out in our own world, these are superheroes from another universe who are (presumably) 6️⃣ likely at some stage to make the time and reality jump so that they interact with the characters we already 6️⃣ know. That is after all, kind of the point of Marvel on the big screen, even to the extent that 6️⃣ we now have superheroes who once existed in entirely different film series – Spider-Man and his various enemies in No 6️⃣ Way Home; Deadpool and Wolverine in the forthcoming Shawn Levy film – happily fistbumping the MCU crew.

Of course, Marvel might 6️⃣ just do something truly original here and keep the awesome foursome trapped in their own world, despite the fact that 6️⃣ they have every means of bringing them into the big, multiversal picture. Who wouldn't want to explore a super-stylised, fantasy 6️⃣ take on the 1960s where everything is slightly different from our own world, in appealingly far-out and intriguing ways? Maybe 6️⃣ the Beatles are all Martians – who knows how weird this stuff could get? But wouldn't that, in a sense, 6️⃣ be cheating, given how Marvel has spent all its time and effort since 2008's Iron Man convincing us that everything 6️⃣ is connected, to the extent that every other studio making superhero movies has become too embarrassed to do anything but 6️⃣ mimic its more successful rival?

The short odds are on the Fantastic Four making the leap pretty quickly. It might not 6️⃣ happen in the space of a single movie but, when it does, the results could be seismic – or at 6️⃣ least amusing. For if advance publicity really does offer a realistic look at the groovy retro world where the quartet 6️⃣ begin their journey, this is going to be the nuttiest fish-out-of-water tale since Arnold Schwarzenegger went chariot racing and fought 6️⃣ a bear in Central Park in 1970's Hercules in New York.