Though it came out just under four years ago in 2008, BlazBlue: Calamity Trigger and its spin-offs have continued to sell well. Today, Aksys Gamesannounced (opens in new tab)that the highly regarded fighting series from Arc System Works has now passed 1.7 million sales worldwide.
That includes the several iterations of the game over the last few years which have tweaked the experience and added fighters, not terribly unlike the well-known iterations of the Street Fighter IV series.
Surprisingly, it was revealed that 800,000 of those sales came from North America. Usually we would expect a hardcore, niche, and utterly bizarre fighting game to be popular in Japan yet struggle in the United States. With numbers like that it's almost certain that we'll be getting more BlazBlue games in the West in the future.
Arc System Works has recently been working on Persona 4 Arena (opens in new tab) which releases next week.