Amnesia on 11 August 2018
A port :
Mario Kart : one new character and resolution 720p --> 900p
An "upgrade"
SSBU : twice more content than the previous, new game mechanics, ton of new option, texture mapping reviewed, 3D models refined a bit.
A new game :
Zelda BOTW : everything from ground, NOTHING used from Skyword or Twilight
