Federal regulators are seeking to block Microsoft's proposed purchase of video game powerhouse Activision Blizzard, the Federal Trade Commission said Thursday.The FTC cited Microsoft's recent purchase of ZeniMax, parent company of software developer Bethesda Softworks, after which Microsoft decided to make several Bethesda titles, including Starfield and Redfall, exclusive to its consoles.With Microsoft in control of Activision, the software maker "would have both the means and incentive" to raise prices, issue lower-quality games or keep content off other platforms altogether, the agency said.Microsoft announced the merger deal in January but faced months of resistance from Sony, which makes the competing PlayStation console and has raised concerns with antitrust watchdogs that it would lose access to popular Activision Blizzard game franchises such as Call of Duty.Workers at two Activision Blizzard divisions also recently voted to unionize, but the company has fought those efforts."