How do you play supreme commander online

try going on gpgnet that came with it. if that doesn't work you can always use LAN while you are on the game. But i have never gotten it to work either. try reporting it to THQ's technical support site . Here's the link: -Question has been modified, please see the related links section below- If you have a legitimate CD with a CD Key or if the game is free, you will need to have an internet connection. When you open the game, look for a multiplayer section or a LAN section if you have other machines at your house you want to play on. I do not know much about this game, but as long as you have the internet and the game is legitimate, and of course the game supports multiplayer.. you should be golden.