➀ Following the acquisition of Activision Blizzard by Microsoft, the console manufacturer has started to bring a number of the publisher's back-catalogue to its Xbox Game Pass subscription service. ➁ Classic Call of Duty games such as 'Call of Duty 1', 'Call of Duty 2', and 'Call of Duty 4: MW 2007' have been listed on the Microsoft Store for PC. ➃ It is speculated that these games could be added to Xbox Game Pass soon, possibly with an official announcement at the upcoming 2024 Game Awards.