Monthly (thank you celado)

#15 PlayStation 4 Limited Edition Call of Duty: Black Ops 3 bundle
#23 PlayStation 4 Uncharted: The Nathan Drake Collection bundle
#24 PlayStation 4 Limited Edition Star Wars Battlefront bundle
#25 PlayStation 4 Star Wars Battlefront bundle
#37 Xbox One 1TB Fallout 4 bundle
#62 Xbox One Limited Edition Halo 5: Guardians bundle
#89 Xbox One 1TB Madden NFL 16 bundle
#94 Xbox One 500GB Kinect with 3 games bundle
#97 Wii U Deluxe Set with Super Mario 3D World and Nintendo Land bundle

Am I going insane or are there little white arrows after every line in my original comment? Anyone else seeing that?!

Edit: fixed it but you can still see it in the quotes. How did I do that lmao?!

Pretty much. I mean, look what happened to Wii sales when both Smash and MKWii were released in adjacent months:

And the Wii U when MK8 was released:

The Wii had its best non-holiday period for several months after the one-two punch of Smash and Mario Kart. How much of that was attributable to those games and how much was due to expanded supply (because what else besides those factors could be responsible for the continued growth of the system?), but MKWii was huge, and until GTAV came along it was the best-selling game not originally bundled with a system (and unlike GTAV it's an exclusive; it also has amazing legs, as it was ranked #55 for the year in 2014 on Amazon US).

The Wii U had a better per-month average in four months following June 2014 than the four months before, plus holiday 2014 was bigger than holiday 2013, and Q1 of this year was actually up over Q1 2014, all without a price cut. MK8, which was made a bundled game, probably helped.

The only non-Nintendo game that I've been able to find that had a discernable long-term effect on hardware sales was FFVII. Prior to Sept. 1997, the PS1 wasn't exactly on its way to being the best-selling system ever in the U.S. It was lagging well behind the SNES by the end of 1996 in terms of launch-aligned sales, and the N64 was the overall sales leader through the first eight months of 1997. By August 1997 it hadn't even breached 4 million units yet, but when FFVII came out in September of that year, it opened the floodgates for the PS1. In the four-month span from Sept.-Dec. 1997, the PS1 nearly doubled its lifetime sales in the U.S. It took off like a rocket and from that point PlayStation became the new dominant force in the U.S. console market. While FFVII certainly wasn't attached to all those new PS1 purchases, it was most definitely a system-seller in the sense that it raised brand awareness to such an extent that it made the PS1 the biggest comeback story since the Genesis (the only other system with a slow start that went on to be a huge success).