What is CS2 case opening? I was asked this question today. CS2 case opening is a feature in Counter-Strike 2 where players unlock random cosmetic items, like weapon skins and stickers, from cases. To open these, players need keys, which can be bought or earned through gameplay. The items inside are random, so you never know what you’ll get, adding excitement. Some skins are rarer and more valuable than others. While they don’t change gameplay, players enjoy collecting them to personalize their weapons and stand out in the game.