When Thanos invades Earth in his quest to collect all of the prettiest rocks in the universe, the Mad Titan will kick off the biggest superhero movie of all-time. Of course Infinity War is just the first half of the story, so it won’t take long for Marvel to top it with Avengers 4. And yet, despite promising to be the most epic showdown in history, it still doesn’t have a public title since apparently the movie’s name will itself be a big spoiler. But the more Marvel tries to hide things from its fans, the deeper they dig, and we’ve got your breakdown of the best candidates based on Marvel comics.

MCU head honcho Kevin Feige himself confirmed the name for Avengers 4 will give a lot away, which is why Marvel is keeping it a secret. So in this special Nerdist News Report Dan Casey examines the four most popular theories out there. Based on various comic book story arcs, they each represent very different paths the studio could take in the ultimate big screen battle for the universe. From the likeliest, to the scariest, to the deadliest, to the biggest dark horse, each theory offers up a very exciting–and terrifying–possibility.

Once we see Infinity War it could become obvious what Avengers 4 will be titled. Or it might just mean we are rooting really hard for one over the rest. But no matter what they call it, we’re going to have theories on what it will mean for the end.

Do you think any of these titles will prove right? Is there another possible name you would bet on? Tell us your best guess in the comments section below.

Featured Image: Marvel