I have dail-up and I can play Half-Life 2 offline, if you don't want steam to keep updating it, open the Play Games menu and right-click on Half-Life 2 and go down to properties. A menu will pop up and it will say Automatic Updates - Always keep this game up to date, you can change it to say Do not automatically update this game. Also you might not have the offline activation code installed on your computer, you need to leave the internet on and steam on, after awhile, the game will be unlocked so you can play it in offline mode. Also to know if offline mode is activated right-click on Half-Life 2 then properties and in that menu, it tells you how much percent of the game is downloaded on your computer. When you fully download the game onto your computer from the discs, I think it is only 75% done. So it could take you awhile to get the offline activation code downloaded onto your computer.
Edited by Fremder, 11 September 2005 - 12:53 PM.
You will not like me if I'm angry.