Mar 2016 Resident Evil 6 PS4/Xbox one/DL 1.1
Oct 2012 Resident Evil 6 PS3/Xbox 360/DL 6.8
Close to 8 million units across every release? This makes me so glad. It's baffling people hate RE6 and are so incredibly salty about it being a succesful entry.
Mar 2009 Resident Evil 5 PS3/Xbox 360/DL 7.2
Feb 2010 Resident Evil 5: Gold Edition PS3/Xbox 360/ DL 2.3
Seems like the current-gen release of RE5 never got around selling over 1 million units, but still, it's very impressive to see a game with such a large focus on co-op selling so well (personally, I find the campaign borderline unplayable without a second player, unlike RE6).
Dec 2005 Resident Evil 4 PS2 2.3
May 2007 Resident Evil 4 Wii edition Wii 2.0
Jan 2005 Resident Evil 4 GC 1.6
I actually expected this title to have sold over 1 million units when it released for last-gen as well. Personally, while I loved playing it, I remember having mixed feelings with it for all the changes they had made. Kind of impressive that both the Wii version and the PS2 version outsold the GC, but I guess it speaks more to how small the install base was for the GC than anything else.