A group of quality assurance testers at Call of Duty developer Raven Software have voted to create one of the first video game unions in the United States, and the first at a major studio in the country.

22 staffers at Raven Software voted, and the motion passed 19-3. The group, known as Game Workers Alliance, can now move ahead with contract negotiations with management at Activision Blizzard. It's not immediately clear what specific terms the group is seeking.

The Game Workers Alliance said in a statement to The Verge, "Our biggest hope is that our union serves as inspiration for the growing movement of workers organizing at video game studios to create better games and build workplaces that reflect our values and empower all of us. We look forward to working with management to positively shape our working conditions and the future of Activision Blizzard through a strong union contract."