Really? Mario kart DS?

[Oyvoyvoyv]

I'm not too surprised.

In the top 15, we'll surely see both

Nintendogs 176 weeks old (12 more than MKDS)

NSMB (138 weeks old (26 less than MKDS)

 

And in the top 20

Brain Training (142 weeks old).

 

All of those games are also in the top 20 for the year in both Others and Americas (MKDS being the only one in Japan).