Avengers 4: Russo Brothers share cryptic photo, fans run wild with best conspiracy theories

Fans are offering up their theories about what a photo from the upcoming Avengers sequel could mean, particularly its title.

On Wednesday, the Russo Brothers, who direct Infinity War, posted a cryptic photograph to their Twitter account, with a simple caption:

Look hard...

Fans were quick to share their theories on what the photograph meant.

Avengers Eternity, perhaps?

Or even Endgame!?

Or simply, Avengers 4?

While others got creative.

HT Twitter moments

More: Convincing Marvel fan theory suggests why Thanos waited so long to attack The Avengers

More: Marvel: 'Let me guess, your home?' is the latest Infinity War meme to take the internet by storm