Send cards after playing games for more than 2 hours, and the store interface of each game will display whether there is a [STEAM Set for Cards].

This card can collect a full set of badges of the synthetic game, and can also send you chat expressions and background pictures of personal data.

You can also go to the STEAM community market to buy the card you need.

Each card can be converted into a STEAM orb, which can know the supplementary package of the game you specify [randomly open three cards of this game], and the orb can also package and trade. It is used to regenerate cards.