Get an additional 24 hours of double XP.
Call of Duty: Black Ops Cold War

Double XP has been extended for Call of Duty: Black Ops Cold War. Apparently, fans were rather upset about how short of a time the ongoing double XP event was and Treyarch responded with some positive news. In short, the double XP will last for an extra day. It will now end at 10AM (PT) on Tuesday, November 17.

Double XP has been enabled for both the Black Ops Cold War multiplayer mode and the Zombies mode.

It would behoove you to take advantage of this double XP event while you can. Fans have been complaining about how much of a grind it is to level up weapons in the game. It also seems as though fans are complaining about how overpowered weapons like the MP5 are in multiplayer.

To fix that, Treyarch says that they are working on balance updates for weapons and score streaks. These will be "coming in with Season 1, if not sooner."