Ultrashroomz on 15 January 2016
Wii version was Yuji Naka's original vision of the game.
Wii U version is nothing more than a port of the 3DS version.
I'd say play the Wii version.
"Just for comparison Uncharted 4 was 20x bigger than Splatoon 2. This shows the huge difference between Sony's first-party games and Nintendo's first-party games."
