Only Pokemon surpassed it.
Gun Game has also been added to the Quick Play Filter.
Issues like map exploits in Ground War and Platinum skins not unlocking are also being tracked.
Grand Theft Auto 5 topped the most downloaded games list on the store in Europe.
5v5 Shipment 24/7 and Gun Game also added as playlists.
It's been an eventful 12 months.
It's followed by Call of Duty: Black Ops and Minecraft.
Dr. Kawashima's Brain Training for Nintendo Switch also manages an impressive debut.
Treyarch's David Vonderhaar doesn't seem to be too fond of jetpacks.
Art director Joel Emslie says more loadout slots may be slated for the next update.
Call of Duty: Modern Warfare comes in at second place with just over 1 million units sold.
The top 5 is entirely unchanged.
Both titles were in the Platinum tier for 2019's top-sellers, best new releases and most simultaneous players.
FIFA, Star Wars, and many others also see sales surges ahead of Christmas.
The juggernaut series continues on with big sales.
New Special Ops missions and Gunfight maps are also being added.
It narrowly beats Star Wars Jedi: Fallen Order.
Pokemon Sword and Shield enjoy the series' best ever launch in the US.
A glitch could show the massive map for the rumored mode.
Gunfight: OSP, Hardcore Shoot House 24/7, and more also added as playlists.
