Ball 3D Trading Cards!

Since today for every $9 you spend in Ball 3D, you will receive a trading card. You can collect 12 of them and craft Ball 3D badges (along with Ball 3D emoticons and backgrounds) or you can sell them to other players and earn some $

Trading cards on the Steam market:
https://steamcommunity.com/market/search?appid=753&category_753_Game=tag_app_485610&q=ball+3d+soccer+online