Index -> Interface -> Casual Games Lobby -> Joining Casual Games
Player-created games show up as Game Medallions in the main area of the Casual Games Lobby. Gold Medallions indicate games already in progress, while silver Medallions indicate games waiting for players to join. A green light on a Medallion indicates an open seat available for a player, while a red light indicates one already occupied.
To join a game, simply click the arrow button on a Game Medallion that has at least one open slot. This will bring up the Join Game dialog box.
Select which deck you'd like to use for the game. If you click the Browse Decks button, you can choose any deck file saved on your computer. If you use the dropdown button, you can quickly select one of your most recently used decks. If you have any Online Decks saved, these are also accessed by the dropdown button. The Deck Selection defaults to the last deck you used.
Once you have made your selection, click the Join button.