Steam Trading Cards

"Steam Trading Cards are virtual cards earned by playing games on Steam. Sets of cards can be turned into game badges and tradable Steam community items."

- Steam FAQ

The Steam Trading Cards system was released on May 15, 2013 as a new element to the steam community. Counter-Strike Nexon: Zombies is the only CSO game to support Steam Trading Cards and so far, the only one.

Unlike Counter-Strike: Global Offensive and other games, the cards for the Counter-Strike Nexon: Zombies will not have a random drop when played at first time. Collecting the entire series of Counter-Strike Nexon: Zombies trading cards allows them to be traded in for a level 1 badge (or upgrade it to the next level if the player already has one. Maximum level 5), a randomly selected emoticon and a randomly selected Steam profile background. First upgrade will earn 100 exp. level for the Steam level. Second is 200, 3rd is 300, 4th is 400 and the maximum level worth 500 points.