Xbox 360 version of Call of Duty: Black Ops 2 leaks onto internet a week ahead of release

The Xbox 360 version of Call of Duty: Black Ops 2 has leaked onto the internet a week ahead of release.

The game appeared on the usual websites for these things last night eight days before its 13th November release.

Now, YouTube is packed with gameplay videos, most of the new expanded Zombies mode. SPOILER WARNING: One of these is below.

Streams have also emerged. Responding, Treyarch design director David Vonderhaar took to Twitter to say: "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"

Then, "I'm really glad people are excited for the game. Legit streams coming up later this week and early next. Watch this space."

The news comes a week after reports claimed Black Ops 2 was sold early in Slovakia, although the Xbox 360 leak is thought to have originated from the US. Halo 4, out midnight tonight, leaked nearly a month before release.

Activision declined to comment when contacted by Eurogamer this morning.