These included messages highlighting how members “have more fun” or get “better pets.” The Campaign for a Commercial Free Childhood said in its letter of complaint that during 19 minutes of gameplay it saw 16 unique advertisements for membership and only four math problems. While the game is given to schools free for students to play in a restricted mode with only their classmates, when children play the unrestricted version of the game at home, they receive regular reminders and messages encouraging them to become members, which costs $59.88 to $107.40 per child per year.