When does the blue cube appear in AR Games?

[A Paragoomba and the Koopa Bros.]

I really want to use play coins for some of those minigames you can buy

 

[Lakituthequick]

IIRC after playing the main games (a few times).

 

[A Paragoomba and the Koopa Bros.]

Thanks.

I did kinda figured out before LTQ answered, so I guess this should belong to the resolved category