To create a game, first click on the "Games" link in the navigation bar. This will take you to the games list where you may click the "Create Game" button in the top righthand corner.

After clicking this button you will be taken to the Create Game screen. On this screen you may fill out the name of your game as well as the description. Both fields are required, but don't worry you can always edit the game details later.

After you've created your game, you will be taken to the Game Details page. From here you can assign characters to the game, invite friends, or start adding secrets to the game.