Sony and Naughty Dog have announced that Uncharted 4: A Thief’s End won’t be making its projected 2015 release.

News of this comes from a post on the PlayStation Blog, where Naughty Dog’s Neil Druckmann and Bruce Straley explained the studio’s reasoning behind the game’s delay to Spring of 2016.

“Since we showed you our first gameplay reveal of Uncharted 4: A Thief’s End, more of the game and story have come together, and it’s become clear to us that this game is much more ambitious than we originally envisioned.

After spending so many years with Nathan Drake, he means a lot to the team, and telling the climactic chapter of his adventures is a task we don’t take lightly — this game deserves every bit of the attention to detail, precise pacing, and nuanced storytelling Naughty Dog is known for. So we’ve made the difficult choice of pushing the game’s release date. Giving us a few extra months will make certain that Uncharted 4: A Thief’s End not only meets the team’s high standards, but the high standards that gamers have come to expect from a Naughty Dog title.

Thank you for your patience — we know the extra wait will be excruciating, but you’ll see it will be worth it as we reveal more about Uncharted 4 over the next year. The team at Naughty Dog will be heads down working through 2015 making sure that Nathan Drake’s story gets the closure it deserves. Come Spring 2016, you and Nate are in for one thrilling, emotional ride.”

Originally announced at the PlayStation 4’s launch event, Uncharted 4: A Thief’s End was properly revealed during Sony’s E3 2014 press conference with a 2015 release window.

The game’s first gameplay trailer was unveiled at Sony’s PlayStation Experience event in December, and many new details were revealed when A Thief’s End was on the cover of Game Informer earlier this year.

Naughty Dog is planning on A Thief’s End being the end of Nathan Drake’s story, with the focus shifting on his relationship with his long lost brother Sam.

At PlayStation Experience, Naughty Dog walked fans through the process of bringing Nate to the PlayStation 4.