sales ranking

Is this possible? Is there some bug in Amazon's sales ranking? Or is a Nancy Drew video game seriously outselling everything on the market?

We're talking Grand Theft Auto, World of Warcraft, the Sony PSP, Half Life 2... they're all getting destroyed by a video game about an old detective series for children that I wasn't even aware was still being written.

http://www.amazon.com/exec/obidos/tg/new-for-you/top-sellers/-/videogames/all/ref=pd_dp_ts_vg_1/104-9928980-7007947

The only thing I can think of is that someone like Oprah or Scholastic is whoring it.

You'd think it would be a Harry Potter game though. Ain't no Nancy Drew movie franchise.