The last report out of Atlus regarding Catherine sales pegged the puzzler at 200,000 units sold within a week of its late-July launch. Two months later, that number has more than doubled.
According to an Andriasang translation of Atlus parent company Index Corporation's yearly earnings, Catherine has now surpassed 500,000 in worldwide sales. That number could be considerably goosed next year when the game officially launches in Europe.
A horror-themed puzzle game, Catherine has players navigating tricky relationship waters as Vincent. When the commitment-phobic protagonist's girlfriend Katherine starts talking about taking their relationship to the next level, Vincent finds himself straying. While out drinking with friends, he meets a flirty bombshell named Catherine, whom--after a series of events he can't quite recall--he wakes up next to the following morning.
In addition to helping Vincent make decisions to extricate himself from the situation, players are called on to fight off the physical manifestations of his fears and guilt as he sleeps. The game also includes local competitive and cooperative multiplayer modes, complete with leaderboard support.
For more information, check out GameSpot's review of Catherine.