Ah, Catherine. If there’s one thing which proves that “sex sells”, it’s you. Selling 141,826 units in Japan and 200,000 copies in the U.S. during its first week, Catherine was no failure for Atlus right from the start. But what was the cause for the game's success? Atlus is well-known and and loved, but their most famous games is the Persona series, and Catherine was a new IP treading on unique gameplay that isn't for everyone. Yet, it still managed to break Atlus’ sale records. How did this happen?