In July, it began allowing cardholders to use their rewards to make online purchases from Apple's iTunes, Walt Disney's Club Penguin and Facebook.

WSJ: The New Credit-Card Rewards Programs

The chart from Compete above shows that Wizard101 has been outperforming other online game worlds for kids like Club Penguin, which is owned by Disney, and Free Realms, which is owned by Sony.

FORBES: Wizard101, The Harry Potter Of Online Games, Sees Growth