Many believe Thanos' snap from Avengers: Infinity War will be reversed in Avengers: Endgame, but what if that is not the case at all? The Marvel Cinematic Universe was completely changed at the snap of the Mad Titan's fingers when half of all life in the universe disappeared. This Decimation has severely reduced the number of heroes still around, and it is widely believed that their goal in Avengers: Endgame will be to restore reality in some way.

One of the most popular theories about the Avengers' plan is that they will try to stop Thanos from ever snapping his fingers in the first place by traveling through time and collecting the Infinity Stones before he gets to them. There is also the thought that they'll gather the Infinity Stones so they can simply reverse the snap to bring back those who disappeared. Either way, it is believed that the Avengers will need to do something along these lines in order to save the dead.

Related: A Complete Guide To The Infinity Stones' Locations, Powers & Future

Screen Rant's newest Avengers: Endgame video (as seen at the top of this post) theorizes that this may not be the case at all. The basis of the theory is that the snap did not kill all of these characters, but rather created a new universe for them to live in. This will either require the Avengers to undo this separation in Avengers: Endgame or choose to let the new universe continue to exist and prosper, while they defeat Thanos and destroy the Infinity Stones in their own world.

The possibility of the MCU creating another universe for it to tell stories in is a fascinating possibility. It would give Marvel Studios a clean break from the first eleven years of story, and maybe even allow for the original Avengers to save the day without sacrificing their own lives in the process. This would then allow for snapped characters like Black Panther and Spider-Man, who already have sequels in development for Phase 4, to become the faces of this new MCU. It may even be possible that this new universe could help explain how the Fantastic Four and X-Men join the ranks once the Disney-Fox deal closes.

This is just one of many theories that are attempting to figure out what exactly Marvel Studios president Kevin Feige, directors Anthony and Joe Russo, and writers Christopher Markus and Stephen McFeely have planned for Avengers: Endgame. It has proven to be a much more difficult task than many would've previously believed, as they're still not showing too much of the film. But, as the marketing campaign kicks into high gear over the next two months, maybe some new Avengers: Endgame details can help provide some guidance for what is coming next.

More: Endgame Theory: Past MCU Villains Will Become Heroes