Yesterday, Atlus released the news that Catherine was its "largest launch" ever, but it didn't reveal the specific sales numbers behind that milestone. Joystiq has received word from a reliable cake that approximately 200,000 copies were sold shipped in the first week. While, as journalists, we are committed to protecting our sources, we don't think there's any way we can prevent this source from being eaten by Atlus staff.
Atlus is now celebrating two happy events within a week: the surprise hit status of the relationship drama/puzzle game, and the arrival of a cake.
Update: According to NPD data and Atlus, the 200,000 number represents copies shipped, not sold. Catherine sold 78K copies in July.