Aion hit the ground running earlier this year, easily breaking the 400,000 mark for pre-orders, and they're continuing the trend. The first month post launch was occasionally rocky, but the good seems to easily outweigh the bad in the eyes of fans: NCsoft announced today that they have sold nearly one million copies of Aion: The Tower of Eternity in North America and Europe.
North America accounted for over 500,000 of those copies, and European sales stand at around 470,000, allowing Aion to make up an extremely respectable 52 percent of NCsoft's total sales last quarter.
Aion has their player base to thank for the sales, but their timing certainly didn't hurt. They enjoyed a launch time relatively free of competition -- the MMO market wasn't exactly glutted with new high-fantasy PvPvE titles in 2009.
Aion officially launched September 22nd in North America, and September 25th in Europe.