Top 5 sales for the DS by region.

"North America: 1. Pokemon Diamond (Nintendo), 2. Pokemon Pearl (Nintendo), 3. New Super Mario Bros. (Nintendo), 4. Brain Age (Nintendo), 5. Mario Kart DS (Nintendo).

Japan: 1. TOEIC Test DS Training (IE Institute), 2. Moero! Nekketsu Rhythm Damashii Osu! Tatakae! Ouendan 2 (Nintendo), 3. Eigo ga Nigate na Otona no DS Training: Motto Eigo Duke (Nintendo), 4. Eitango Target 1900 DS (IE Institute), 5. Hoshi no Kirby: Sanjou! Dorocche Dan (Nintendo).

UK: 1. Dr. Kawashima's Brain Training (Nintendo), 2. Cooking Mama (505 Games), 3. Nintendogs: Lab & Friends (Nintendo), 4. Big Brain Academy (Nintendo), 5. New Super Mario Bros. (Nintendo).

It's business as usual for the Nintendo DS this week, with Pokemon Diamond and Pearl, TOEIC Test DS Training and Dr. Kawashima's Brain Training continuing to lead the charts in the U.S., Japan, and Europe. Ouendan 2 sees a small drop in sales after last week's chart-topping debut in Japan, succumbing to the might of several popular brain training and edutainment software titles. The game still remains a worthy competitor, however, and its sales strength could keep it in the top five for several weeks more."

Full Source: Gamasutra via Gonintendo