Dark Souls went on sale in Japan a little bit earlier than in the rest of the world and it has gone on to post very impressive sales in its first week.
It sold 279,567 on the PS3 to become the best selling game of the week. It also saw Dark Souls sell more than its predecessor, Demon's Souls, in its first week.
Dark Souls releases in North America and Europe next week on the PlayStation 3 and Xbox 360. And as the game's tag line suggests, you should "prepare to die".