To participate in any tournament on Challengermode, you need to add a Game Account for the corresponding Game.
This means, that if you want to participate in a CS:GO Tournament the first thing you need to is to add a CS:GO Steam Account to your Challengermode account.
The process is very easy and only takes a minute or two, but it can vary slightly depending on the game.
To find all available games, click Browse Games in the menu in the upper left.
Continue by selecting the game you want to compete in.
This will redirect you to an Overview page for that game.
Continue by clicking the Add Game Account button located just beneath the game title.
This is where the process may vary for certain games, below you'll find detailed articles on how to continue with adding your Game Account for each game.
If you have any further questions, please contact the on-site Support Chat by clicking the question mark ( ? ) at the bottom right of your screen, then click Chat with us to get in touch with the Support Team!