Call of Duty Warzone is a free to play game. It's not on GamePass and it doesn't need Xbox Live Gold either. MW2 and its multiplayer component is not free. You need to buy it if you want to play the single player game or MW2 multiplayer.
Linking a Gaijin account to Steam is necessary to synchronize the progress on your Gaijin and your Steam accounts and is possible on the condition that you have never logged into the game via Steam or linked accounts earlier in our other projects.
