given us a glimpse of the studio's first PlayStation 4 game.

IGN fan NickoMcBrain spotted this image in the background of the video.

We can see two character models that clearly don't fit into the world of The Last of Us.

They seem to resemble pirates.

The Last of Us takes place in the 21st century after a cataclysmic event causes society to

crumble. It's hard to imagine where its characters might have found such clothing. Of course,

there is a multiplayer component that we still haven't seen.

But perhaps we could be getting a glimpse at Naughty Dog's yet-to-be-announced PlayStation

4 game.

Some time ago, Naughty Dog was split into two teams. One has been working on The Last

of Us for something like four years. The other made Uncharted 3 -- and it is unclear what

they've been working on since.

Could this be Uncharted 4?

We'll continue following this story here at IGN.