DKC : Tropical Freeze is now selling like hot cakes on Amazon all day thanks to a $10 price cut. $40 is a great price for the best platformer released so far this year.
It's been at #6 all day, coming close to the PS4's sales rank (#4). #5 is a crazy sweet deal on Bioshock trilogy for PC:
http://www.amazon.com/best-sellers-video-games/zgbs/videogames/ref=sv_vg_11
EDIT 4/2
Infamous overtakes DKC:TF and is currently at 7, but DKC still charting in @ 8. Both are outselling Titanfall. PS4 stuff dominates a majority of the top 10.
I predict NX launches in 2017 - not 2016