Yup, I offer coupons for games such as:
-Salvastian
-Blood Harvest 2
-Akin Vol.2
-Golf Peaks

As I said, you can give cards from any games, but I am most interested in cards from Portal2




https://psteamcommunity.yuanyoumao.com/tradeoffer/new/?partner=1570549690&token=Ew9deczw