• 'The Last of Us' is an action-adventure survival horror video game developed by Naughty Dog and published by Sony Computer Entertainment.

'The Last of Us' is an action-adventure survival horror video game developed by Naughty Dog and published by Sony Computer Entertainment. (Photo : YouTube/TheRadBrad)

"The Last of Us 2's" production is already underway now that Naughty Dog has already released "Uncharted 4." The developer has included a teaser in "Uncharted 4's" gameplay, where a poster of a pregnant girl that reads "The Last of Us American Daughter" is seen.

According to HNGN, the girl in the poster is a lookalike of Ellie from the first installation of "The Last of Us." Various gaming analysts are claiming that she is Ellie, only that she appears pregnant in the picture.

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This sparks more speculations as to whether the child she is carrying could be immune to the virus just like she was in "The Last of Us." This means the story in the sequel could twist in another dimension and create an atypical game.

The poster also shows a "Dark Horse Comics" logo at the bottom. Notably, Dark Horse Comics and Naughty Dog have been known to partner with one another, with the former frequently publishing artwork created by the latter.

Such teasers are not new for Naughty Dog as the developer is notorious for leaving Easter eggs and teasers in its games. The latest one being "The Last of Us" poster in "Uncharted 4," players have been left uncertain of what it could mean, with conjectures of the second sequel in mind.

One certain thing is that the development of the sequel to "The Last of Us" has commenced or is about to commence. In an interview with PlayStation Magazine, as cited by Games Radar, creative director Neil Druckmann revealed that by the time "Uncharted 4: A Thief's End" comes out, the development of "The Last of Us 2" will have been in progress.

This indicates that the game is in the works at the moment. Reports are hinting of the possible title as "Days Gone." Details of the gameplay are yet to be disclosed although the original story of the game could be twisted a bit or even focused on different characters.

As of now, "The Last of Us 2" has not yet been provided with a possible release date. Here is a video confirming "The Last of Us 2":