From what I can tell, Splatoon is the first Wii U game to be number one in sales its first two weeks globally

[Ryng]

Metallox said:

Ryng_Tolu said:
Spurge, Mario Kart is release the week of Watch_Dogs. :P

So, in other words, Mario Kart is Watch Dogs?

No, but Watch_Dogs has sold over 4 million first week.