FearMonkey
Vault Senior Citizen

Saying this is a rumor even though the source is probably solid, but it's from a link, so it's not official. From the NPD thread on NeoGAF:
Fallout 4
2.54M physical units sold including bundles (digital copies not included)
(In comparison, The Elder Scrolls V: Skyrim' sold 2.833 million in November 2011 when you combine the normal and collector's edition SKUs.)
Steam: 2 million worldwide, 900k U.S.
Official Info:
Fallout 4
2.54M physical units sold including bundles (digital copies not included)
(In comparison, The Elder Scrolls V: Skyrim' sold 2.833 million in November 2011 when you combine the normal and collector's edition SKUs.)
Steam: 2 million worldwide, 900k U.S.
Official Info:
Software:
1.) Call of Duty: Black Ops III - (Xbox One, PS4, 360, PS3, PC | Actvision Blizzard) - Higher than Advanced Warfare, highest selling game since 2013
2.) Fallout 4 (PS4, Xbox One, PC | Bethesda Softworks) - Up 70% versus Fallout: New Vegas and 9% versus Fallout 3 when adjusted for days in the month, more comparable to Skyrim
3.) Star Wars: Battlefront (PS4, Xbox One, PC | Electronic Arts) - Up 21% versus The Force Unleashed, the previous best selling Star Wars game (it had a worldwide LTD of over 7 million copies)
4.) Madden NFL 16 (PS4, Xbox One, 360, PS3 | Electronic Arts)
5.) NBA 2K16 (PS4, Xbox One, 360, PS3 | Take-Two)
6.) FIFA 16 (PS4, Xbox One, 360, PS3 | Electronic Arts)
7.) Need For Speed (PS4, Xbox One | Electronic Arts)
8.) Halo 5: Guardians (Xbox One | Microsoft)
9.) Assassin’s Creed: Syndicate (PS4, Xbox One, PC | Ubisoft)
10.) Just Dance 2016 (Wii, Wii U, 360, Xbox One, PS4, PS3 | Ubisoft)
“Fallout 4 performed extremely well. Adjusting for days within the data month, this was the best Fallout launch in the history of the franchise having sold over 70 percent more units than Fallout: New Vegas and 9 percent more units than Fallout 3. In fact, Fallout 4’s launch is more comparable to Bethesda Softworks’ other successful launch of Elder Scrolls V: Skyrim.” -NPD official quote