Case Upgrader is a simulator where you can open cases, upgrade skins, chat&trade with other players, play jackpot&coinflip online and more! Upgrader. Upgrade your old skin to new better skin! Available multipliers: 1. 5x, 2. 0x, 5. 0x, 10. 0x. Case opener&Special cases. Open cases with all skins or special cases with specific skins. You can open 4 cases at time.