Skullwaker on 24 January 2016
I'll give one for each platform because equal opportunity and everything.
Wii U - Kirby & The Rainbow Curse
3DS - Codename S.T.E.A.M.
PS4 - Tearaway Unfolded
PSV - Persona 4 Dancing All Night (I guess)
XBO - Halo 5: Guardians (for most other franchises these sales would be fine, but it isn't on par for Halo)
Overall I'd say either Tearaway or Codename STEAM is the winner. Neither had massive expectations, but I'm fairly certain both Sony and Nintendo expected more than 200k for them.
