On 26 March 2013, Square Enix announced that the game sold 3.4 million copies worldwide at retail, but has failed to reach predicted sales targets. However, on 29 March 2013, Crystal Dynamics defended "Tomb Raider"s sales, stating the reboot had the "most successful launch" of any game that year in addition to setting a new record for highest sales in the franchise's history. On 22 August 2013, Darrell Gallagher, head of product development and studios for Square Enix, announced on Gamasutra that the game had sold more than 4 million copies worldwide. In the United Kingdom, "Tomb Raider" was the 6th best-selling boxed game of 2013. On 17 January 2014, Scot Amos, executive producer of "Tomb Raider", revealed that at the end of 2013 the game achieved profitability. On 3 February 2014, "Tomb Raider: Definitive Edition", a re-release for PlayStation 4 and Xbox One, debuted atop the UK charts. On 6 March 2014, Gallagher predicted that the game would surpass 6 million units by the end of the month. By April 2015, Gallagher announced that the sales had reached 8.5 million, making the game the best-selling "Tomb Raider" title to date. , the game has sold more than 11 million copies. At San Diego Comic-Con 2013, it was announced that comic writer Gail Simone would be continuing the reboot's story in a line of comics published by Dark Horse Comics, and that the story of the comic would lead directly into a sequel. Later, at the beginning of August, Square Enix's Western CEO Phil Rogers confirmed that a sequel to "Tomb Raider" was being developed for unspecified next-gen consoles. In an interview later that year, Brian Horton, the senior art director for Crystal Dynamics, said that the sequel would tell "the next chapter of [Lara's] development... her life is changing. She can't go back to the way she was." During Microsoft's E3 2014 presentation, "Rise of the Tomb Raider" was announced as a sequel. At Gamescom 2014, Microsoft announced during its press briefing that "Rise of the Tomb Raider" would be exclusive to Xbox consoles at launch. However, the exclusivity was timed, which meant that the title would see a release on other platforms after an unspecified period of time. In December 2014, Microsoft announced that they would be publishing the title for its release on Xbox consoles. "Rise of the Tomb Raider" was released on 10 November 2015 for Xbox One and Xbox 360, and 28 January 2016 for Microsoft Windows.