Express.co.uk has kept this article spoiler-free.
Avengers: Endgame, Marvel’s biggest blockbuster yet, is out next week but footage that appeared to be from the very end of the film has already surfaced online.
As a result, fans on Reddit have been issued a stark warning not to spoil the film for those who don’t want key details revealed ahead of time.
A notice that has been 99% Upvoted declares that moderators will manually approve all posts on the Reddit board, so that the site can be safe for all. Those who want to share and discuss alleged spoilers can do so in a specially designated and clearly labelled thread.
User KostisPat257 said: “So, most of you already know that quite a lot of important scenes from Avengers: Endgame have been leaked online.
“Therefore, Project Insight has been enacted a little earlier than usual this time, and all posts are being manually approved by us, the mods, to keep spoilers from getting to the front page.
“That also means that your posts might not be visible in sub right away, if no mods are active to approve them.”
They added: “All discussion of the recent leaks should go on our pinned megathread. Posts outside of that thread discussing or posting the leaks, even with a spoiler tag on, will be removed.
“Same will go for when the movie will be released. ALL discussion of the movie will be contained in our pinned megathreads for at least one week after the movie releases.
“In that time there will be sticky posts for Twitter Reactions, Critic Reviews, and finally both International and General Discussion threads.
“If you see anyone spoiling the movie for anyone outside the International and General Discussion threads or the Leaked Footage Discussion Thread without properly tagging their spoilers, report them and they will be banned.
“The best way to avoid spoilers of course is to avoid Reddit (and all social media) entirely and see the movie as soon as possible, but we will try to keep this sub as spoiler-free as we can.”
Another moderator added: “Additionally, we’re doing all we can to filter the comments as well for spoilers. If you see a comment that contains spoilers, report them, even if you think they’ve already been reported.”
Elsewhere on the Marvel Studios Subreddit, users have been thanking the moderators for spoiling the film for themselves, in order to protect others.
“Big THANK YOU to the mods who are already removing spoilers and leaked footage and probably ruin the film for themselfes [sic] beforehand! You are the true heroes!” said one.
Despite the leak, Endgame is on track to be the biggest film of the year so far, and it could easily challenge to be the biggest movie of all time.
Avengers: Endgame is out on April 25 in the UK, and April 26 in the US.