Purchase at Superhero City using a Rixty account:
Go to Superhero City website http://superherocity.klicknation.com/and click the "Merit Points" option in the top menu.
Find the Rixty payment option, then select your price point and click the "Buy Now" button
Login to your Rixty account and complete the purchase. If you need to add funds, click a payment method and follow the prompts.