BobbyDylan said: How do you get the rest? And what are they for? Click to expand...

You have to trade them with other players or buy them on steam (about 20 eurocents per card). When you get all of them, you can make a badge (achievement of a kind). With more than one set of cards you can "level up" your badge.Every time you make a badge, you get a bonus - some are useless, like background for your profile or emoticons, but sometimes you can get -10% discount card, which is nice and the only reason I'm collecting those things