Japanese researching company Enterbrain reported today that Microsoft's Halo 3 debuted yesterday in Japan with around 45,000 copies sold. This only accounts for the first day the game went on sale. This is reasonably a lot, as Blue Dragon, the biggest selling Xbox 360 game thus far in Japan with around 200,000 copies sold, debuted with over 83,000 copies in its first week.
Hardware numbers are also expected to be up quite a bit, although still not the level of Nintendo Wii or even the Playstaion 3. Other titles worthy of noting that debuted yesterday was Elder Scrolls IV: Oblivion for the Playstation 3, which sold about 15,000 copies in its first day.