We don't but seeing the UK growth for GOWR I reckon its close to 3M.
SM2 I reckon is around the same 2.5M ballpark
Also I think FF7R and TLOU II are approaching that list.
Iirc FF7R > FFXV, with FFXV being 1.57M without digital
TLOU II > FF7R
Obviously big missing games is TOTK and Pokemon SV, could be number 1.
Oh and SSBU was 3.6M but had a 5 week December.
Found list with SSBU as of 2018
1st Month U.S. Best-Selling Exclusives - Unit Sales
1/ Super Smash Bros. Ultimate
3.6 millions, December 2018 (30 days / 5 weeks tracking)
2/ Halo 3 :
3.3 millions, September 2007 (12 days / 2 weeks tracking)
2/ Halo Reach :
3.3 millions, September 2010 (19 days / 3 weeks tracking)
4/ Halo 2 :
3.27 millions, November 2004 (19 days / 3 weeks tracking)
5/ Halo 4 :
3.2 millions, November 2012 (19 days / 3 weeks tracking)
5/ Pokemon Sun+Moon :
~3.2 millions (estimate), November 2016 (9 days / 2 weeks tracking)
7/ Super Smash Bros Brawl :
2.7 millions, March 2008 (27 days / 4 weeks tracking)
8/ Spiderman :
2.6+ millions*, September 2018 (23 days / 4 weeks tracking)
9/ Pokemon Black & White :
2.5 millions, March 2011
10/ GTA San Andreas :
2.06 millions, October 2004
11/ God of War :
1.9 millions**, April 2018 (16 days / 3 weeks tracking)
* includes digital
** includes digital and bundle copies.
1st Month U.S. Best-Selling Exclusives - Dollar Sales
1)NSW - Super Smash Bros. Ultimate (30 days / 5 weeks tracking
2) X360 - Halo: Reach (19 days / 3 weeks tracking)
3) X360 - Halo 4 (19 days / 3 weeks tracking)
4) XBO - Halo 2 (19 days / 3 weeks tracking)
5) X360 - Halo 3 (12 days / 2 weeks tracking |
$225 million)
6) PS4 - Marvel's Spider-Man (23 days / 4 weeks tracking)
7) Wii - Super Smash Bros. Brawl (27 days / 4 weeks tracking)