CS:GO Cases to Open The CS:GO cases offer players an enjoyable and shadow case rewarding experience. There are both risks and rewards associated with opening these cases. The items can be used to play the game, or offered on Steam for a profit. To open a case you'll need a key. You can obtain keys through CSGO games, trading with other players, or buying them from websites of third parties. 1. Prisma shadow case snakebite (Images.Google.co.il) CS:GO is primarily known for its competitive 5v5 matches and the thriving esports community, Shadow Case but it also runs on an in-game economy that is worth billions. The in-game economy is largely based on cases which players can open and receive expensive skins for knives or weapons for a small cost. Although it's generally better to save money for an exact skin, opening cases can be an excellent option to add some excitement to the game. The Prisma chroma 2 case was released on March 13th, with the Seeing the Light Update.