The clip, which appears to be a follow-on from the Season 4 official trailer, reveals a scene which was not previously shown.
It features the UFO from the video continuing its journey through space, before eventually landing on Mars.
The video was discovered by a fan within Epic Game’s file logs and shared on Reddit, where it has gained huge popularity.
And now they are speculating what will happen at the end of this season.
One theory believes the new missile silo to the west of Snobby SHores could be at the centre of the event.
They argue there would be no use for the site unless it was launched.
Others chipped in on the post, claiming the low-gravity crystals dubbed “hot rocks” added to the game could be a preview for a new mode in space.
But others believe it was just part of the original video which was simply never used in the final edit.
Since the theory was uploaded online on Monday it has received more than 4,000 upvotes.
The new season of the 100 player Battle Royale game was released on May 1.
So far we have seen a number of new skins, dances and cosmetics released for PS4, Xbox, PC and Mobile players.
And some eagle-eyed players have even managed to spot some unreleased content.