Uncharted The Lost Legacy was initially planned as an expansion to A Thief's End. However, Naughty Dog decided to give Chloe Frazer and Nadine Ross their time to shine as a standalone project.

How well do you know the Uncharted games? One of Sony's heaviest hitters of the PS3 and PS4 eras, Naughty Dog struck gold ...

and Uncharted: Drake's Trail. It's typically uncommon for Sony to hand off its tentpole first-party IPs to other developers under the PlayStation umbrella, but Bend Studio was an exception.