To play in a network game, you will need to connect to a game server.

To connect to a game server, choose "Connect to Server..." from the Network menu, or click the Connect to Server button in the toolbar.

Game servers on the local network are listed in the Servers list. If you see the game server that you want to connect to, select it. Otherwise, enter the address of the server.

Choose a color for your player from the color picker, and enter your name. Then click Connect.

Wait for the player at the game server to start the game. In the meantime, you can iChat with the players connected to the same server.

When the game begins, play continues as normal.

To disconnect from a game server, choose "Disconnect" from the Network menu, or click the Disconnect button in the toolbar.