Yes, Black Ops 3 is still active on Xbox One. Despite being released in 2024, the game continues to have an active player base on the Xbox One platform.
Worry not about PVP: There is a maximum of 24 players in each server, but Modern Warfare Zombies (MWZ) is a PVE-focused game mode within Call of Duty: Modern Warfare III. Work together or ignore other players entirely.
So reads a post to the official Lionsgate and Saw social media pages this afternoon. Along with it, the date 9.27. 24 was posted which, one presumes, is the release date for the 11th film in Lionsgate's durable franchise. That's roughly the same window in which Saw X debuted this year.