Everyone, including regulatory bodies all over the world, knows that Microsoft already owns Activision Blizzard, and by extension, Call of Duty. But, that probably doesn't mean that it should be obnoxious about it, which is what it's doing on the Xbox.

The multi-trillion tech giant finds itself at the center of controversy following an overly aggressive advertising campaign for the newly released FPS shooter, Call of Duty: Modern Warfare 3.

As users booted up their Xbox consoles, they found themselves met with a surprising and unwelcome sight in the form of a full-screen advertisement prompting them to preorder the latest Call of Duty entry. This bold marketing maneuver comes on the heels of Microsoft's acquisition of Activision Blizzard, the publisher behind the best-selling first-person shooter franchise. While such promotional tactics aren't entirely new to the platform - previously seen with exclusives like Starfield and Forza Motorsport - the degree of intrusion has gone from bad to worse, much to the chagrin of the relatively small Xbox player base.

The advertisement, which dominates the Xbox start screen, offers players early access to Modern Warfare III's campaign upon preordering. However, the catch is the game's official release isn't until November 10, rendering the ad premature for many. The aggressive marketing approach has raised questions about the balance between advertising and user experience, especially considering the financial investment consumers make in gaming consoles.