If, for some reason, you still haven't picked up the fastest selling retail title of all time, you now have a new a new way to get it. Call of Duty: Black Ops hits Xbox Live through the Games on Demand service today, at a price of £44.99 (or $59.99 USD).
This news comes at the same time as the release of a new map pack, the Escalation: Pack 2. If your funds aren't already milked dry from buying the game, you might want to pick that up as well for the full experience.
Be aware that the game is nearly 7 GB in size, so you'll have have to endure a fair bit of waiting before you can jump into the action.
If you would prefer to play the game straight off of your PC, the game has been available on Steam for quite sometime.With the PSN service currently offline, it's tough to say whether a downloadable release will come any time soon. We'd certainly bet that Black Ops will hit the service sooner rather than later, though, due to the disturbing level of popularity the series has garnered.