Play CS:GO, TF 2, Dota 2, Portal 2, Half-Life 2 or ‘Don’t Starve’ to get trading cards. Up to half the card set is dropped through game play, the other half is earned through your collecting prowess.
Craft game badges
Once you’ve collected a set of cards you can craft them into a game badge. Crafting games badges earns you marketable items like emoticons, profile backgrounds, and coupons. Level up your badge by collecting the set again and earning more items.
Get rewards for crafting badges
During badge crafting you’ll receive random rewards from a set of game related items. They are tradable and can only be used while you possess them.
To receive an invitation, you have to post a request in the user groups:
Only 3 available. Enjoy!