While a parent's actual credit card may be linked, within the world of the game, kids spend only fictional currencies - like V-Bucks in "Fortnite," or Robux in Roblox.

Everything you need to know about Roblox's child safety policies, how to set up parental controls, and recent controversies surrounding the platform.

Kids who play Roblox games describe ‘scary’ virtual currencies and ‘cash grab’ random rewards.