Free-to-play games can get expensive when children are able to purchase in-game add-ons. That's why one mother is going to court with Facebook over this practice. A California woman has filed suit against the social network, claiming it allowed minors to make millions of dollars in unauthorized charges for Facebook Credits.

Facebook lets children, as young as 13, create accounts, but the anyone under 18 must get parental permission before buying Facebook credits. The suit alleges that goes against multiple consumer protection laws in California as well as federal statutes.

The suit is seeking class action status, and was filed on behalf of all parents and legal guardians in the US whose children made unauthorized purchases on Facebook. It alleges those damages add up to more than $5 million, and the woman suing put her personal losses at "several hundred dollars."

Apple is facing a similar lawsuit over free-to-play games, as they previously allowed players to make in-app purchases without entering an account password for validation for the first 15 minutes after a game was downloaded. This led to minors getting hundreds of dollars in charges for games which were downloaded for free, but encourage players to spend money in the game.