Even though no new BioShock games have been announced, the franchise remains "really important" to publisher 2K Games, parent company Take-Two Interactive CEO Strauss Zelnick said today.

　　Speaking during the Technology, Media, & Telecom Conference in New York, Zelnick revealed that the BioShock franchise in all has sold more than 25 million copies. BioShock Infinite alone, he said, has sold 11 million copies.

　　"It's a really important intellectual property for the company," Zelnick said. "And while I don't have any announcements to make, yes, it's a really important franchise for us."

　　BioShock Infinite, released in 2013, is the most recent entry in the core series that initially debuted in 2007 and spawned a sequel in 2010. Creator Irrational Games effectively closed in February 2014, with series designer Ken Levine and a small team staying on to work on a smaller, more entrepreneurial project.

　　Development on the BioShock franchise going forward will be handled by 2K Marin. A year ago this month, Zelnick said during a presentation that he thinks BioShock series still has a lot of room to grow--creatively and commercially.

　　"I think there's a lot of upside in that franchise," Zelnick said at the time about BioShock. "It hasn't necessarily been realized yet. And the question for the future, assuming we decide to answer the question, would be 'How do you stay true to that creatively?'; 'How do you do something exciting?'; and 'How do you do expand the market?'. That would be the natural drill. We're starting from a good point on it. And certainly it's been a great piece of business for us; it's been a profitable piece of business."

　　Recently, 2K started teasing a new game, though there is no indication that this is a new BioShock title.