"Avengers: Endgame" arrives in theaters in worldwide territories beginning April 24 and in the United States on April 26.
Soon after the statement was shared by the directors, numerous official Marvel superhero Twitter accounts, including Captain America, Black Panther and Captain Marvel also shared the statement, adding '#DontSpoilTheEndgame'.
According to reports, in its first week of presale tickets, "Endgame" sold almost twice as many tickets on Atom Tickets as "Aquaman", "Star Wars: The Last Jedi", "Avengers: Infinity War", and "Captain Marvel" combined.
Those who have watched the leaked video of Avengers Endgame have described it heavy spoilers.
Some fans said they had seen brief, grainy scenes on Reddit, YouTube and other platforms, but the footage was swiftly removed.
"Remember, Thanos still demands your silence", they continued - a reference to the film's main villain, a genocidal warlord played by Josh Brolin.
"For all of you who have been on this journey with us since the very beginning, sharing every high and low with your family, your friends, your classmates, your co-workers", the letter reads.
They could do their own thing, tell their own stories around all that fancy movie hype, and carve out their own corners of a universe that always wanted you to think it was a lot more connected than it ever actually was. The follow-up to last year's Avengers: Infinity War will see the MCU, as we know it atleast, come to a conclusion.
That last line is a reference to a similar letter the directors wrote before Avengers: Infinity War hit theaters.
If you find it hard not to fire up those social media apps every time you pick up your phone, consider uninstalling them for the time being.
In their letter, the Russo brothers made a plea to fans about "Avengers: Endgame", the final movie in the Infinity Saga. CNBC reported the studio has barred film critics and journalists from seeing the movie before its premiere date.