The class members are Google Play Store individual consumers in 12 states, including Ohio, Michigan and Georgia, in addition to American Samoa, Guam, Northern Mariana Islands, Puerto Rico and the U.S. Virgin Islands.
The plaintiffs' lawyers in the newly certified class action are jointly working with those state enforcers.
Google has defended its Play Store business practices, denying the claims in the case before Donato and others.
In arguing against class-action certification, attorneys for Google said the plaintiffs failed to show how they were harmed, an argument that Donato rejected.
The class attorneys allege among other things that Google prohibited app developers from steering customers to competitors and used "misleading warnings to deter customers from downloading apps outside the Google Play Store."