If you are talking about Mars Colony Online, opposed to the Demo- you will have to ask Hyper (Hyper is Member on these forums, not Hyper as in Hyperkat games) on these forums (send him a message using the message facilty on these fourms) that you would like to test it (MCO not the Demo) you will need to give him a Game name and password to log in, as well as DL the latest client, which you be able to do after you have permission to test MCO.