Usually, free weekends only apply to multiplayer.
Activision has decided to make Black Ops 6 temporarily free. Anyone can download the shooter between October 9 and 16 on PC and consoles to explore not only the multiplayer and zombie mode, but also the campaign. No restrictions.
Call of Duty regularly gets free weekends with the start of new seasons, but the campaign has become free for the first time. It is assumed that Activision wants to distract the public from Battlefield 6, which will be released on October 10.