All Activision games apart from Call of Duty could go Xbox exclusive after the acquisition goes through. This comes as part of Sony's agreement with Microsoft, in which the PlayStation studio opted to keep Call of Duty for longer, losing other Activision games in return.
This part of the agreement has just been confirmed by Microsoft, revealing that it had initially offered Sony the chance to keep all "existing Activision console titles" on PlayStation until 2027. Sony, however, rejected this deal and instead negotiated to keep Call of Duty for a full ten years, at the expense of other titles published by Activision - even those that already have releases on PlayStation.
While the deal that Sony agreed to hasn't been revealed, Microsoft has released one of its email correspondence with PlayStation boss Jim Ryan. Here, we can see the two parties discussing how the deal should proceed.
"I'm writing to follow up on our prior discussions about Microsoft's intent to honor all existing agreements between Activision and Sony, and our desire to keep Call of Duty on PlayStation," reads the email from Phil Spencer. "The proposed agreement provided that Microsoft would keep all existing Activision console titles on Sony, including future versions in the Call of Duty franchise or any other current Activision franchise on Sony through December 31, 2027."
However, Microsoft has since told The Verge that Sony rejected this deal, and will instead have access to future Call of Duty titles for a longer period of time. As it's a ten-year deal, and it's looking increasingly likely that the acquisition will go through this year, we can expect Call of Duty to release on PlayStation until around 2033. This is the same deal Microsoft has reached with Nintendo and various streaming platforms, although we can expect other Activision properties to go Xbox console exclusive.
This would span a wide range of properties. Perhaps most interestingly, both Crash Bandicoot and Spyro the Dragon may not be able to launch on PlayStation anymore, despite starting out as PlayStation exclusives, and to many, even unofficial mascots. Other than this, Blizzard will also give Microsoft exclusive access to Diablo, World of Warcraft, Overwatch, and Starcraft. We can expect existing live services to remain on other platforms, but future instalments may not leave PC and Xbox. That hasn't been confirmed just yet, but based on what we know of the deals so far, there would be nothing stopping Microsoft - unless it feared a significant loss of revenue not made up for by increased Xbox sales.