The Xbox 360 version of Call of Duty: Black Ops 2 leaked to pirating websites over the weekend, roughly one week before its Nov. 13 launch in North America.
Since emerging online, gameplay videos and live-streams of the yet-to-be-released title have appeared on YouTube and livestreaming websites, respectively.
Treyarch design director David Vonderhaar took to Twitter to comment on the pirating of Black Ops 2, writing: "If you are going to live-stream the game early, which I don't remotely recommend, you could at least be good at it. :P"
Vonderhaar later added: "I'm really glad people are excited for the game. Legit streams coming up later this week and early next. Watch this space."
This news comes just weeks after an apparent leak of Halo 4. Earlier in the month Microsoft confirmed to Polygon it was investigating reports of a leak of the title after a number of images of the game discs and dashboard photos were posted online.
Call of Duty: Black Ops 2 will launch Nov. 13 on PC, PlayStation 3 and Xbox 360. A version for Wii U will launch Nov. 18. We have contacted Activision for comment and will update the post when more information becomes available.