Japanese software sales thus far (Famitsu)

– Yakuza 3 (PS3, Sega): 466,164 units sold
Release: 26.02.09

– Animal Crossing: Wild World (NDS, Nintendo): 4,971,446 units sold
Release: 23.11.05

– Mario Kart Wii (Wii, Nintendo): 2,210,028 units sold
Release: 10.04.08

– Biohazard 5 (PS3, Capcom): 439,287 units sold
Release: 05.03.09

Source