Actually, the best-selling Xbox One game in Japan is Titanfall with an amazing amount of 37,029 copies sold, according to vgchartz.

Now that Minecraft has been announced for Wii U, also in Japan :

[トピックス]速報！『マインクラフト』がWii Uに登場。12/17（木）よりニンテンドーeショップで販売開始！https://t.co/xNiXEDXzj8 pic.twitter.com/w2xBxbAyKO

— 任天堂株式会社 (@Nintendo) December 7, 2015

Risky ? I know. I like to live a dangerous life. Feel free to rape me if I fail.

The Vita version has almost already sold a million in Japan, physical+digital. I doubt the Wii U version will best that.

I dunno what you mean by 8G but...

http://www.vgchartz.com/game/75584/minecraft/Japan/

The Vita version isn't published by Microsoft Japan in...Japan. Wii U is.

what about the PS4 version ?

http://www.nintendolife.com/games/wiiu-eshop/minecraft_wii_u_edition

They have Mojang as the publisher, but as far as I know, nothing has been said officially about the publisher, so I don't really know. Just for clarities sake, do you have a source confirming that MS Japan is the publisher?

Yep' ! I should have linked it before. Here, I google translated it

Original link : Here

"December 17 in (Thursday) and will be released from Microsoft Japan in Wii U around the world."

Oh-kee, then yes. I'd suggest you change the title to best-selling Microsoft published 8G game etc. just to avoid confusion, but that's up to you.

Vita version will do better in the end.

last generations yes but it was pretty common in the early generations.