A certain number of balls in "steam" can be used to make supplementary packages, and steam cards can be obtained by opening the supplementary packages.

Functions of steam card:

Collecting a set of cards can synthesize badges, and the expression and background of the Steam community will decrease during the process of synthesizing badges. Synthetic badges will gain experience and improve steam levels.

Steam platform is a game platform developed and designed by Bram Cohen, inventor of BitTorrent(BT download) hired by Valve Company. Steam platform is the largest comprehensive digital distribution platform in the world. Players can buy, download, discuss, upload and share games and software on this platform. 20 15 10, Steam won the 33rd golden rocker award for best game platform.

reference data

Steam (game platform). Baidu Encyclopedia [reference time 20 17- 12-22]