The stolen documents indicated that Sony wanted to release several Marvel-inspired titles in the next decade, including Spider-Man 3, based on Venom and X-Men games. The files also reference a new Ratchet & Clank game in 2029. Insomniac and Marvel's licensing commitment is as high as $621 million to develop and market the X-Men games by 2035, according to one document.

The cache also indicates that Sony was worried about Microsoft's $68.7 billion takeover of Activision Blizzard as a potential "leapfrog" moment for its long-term console rival to take the lead.

Sony was worried that Vole would use Call of Duty to "disrupt and threaten console gaming and game subscription markets", with a potential "massive threat to PlayStation Plus."

"Activision provides incredible strategic value across live service games, scale in mobile and PC storefront (Battle.net)," Sony wrote, describing the various advantages Microsoft has now added to its portfolio with freshly completed deal.