try looking under the individual game settings. right click on the game and hit properties.Kuli24 said:I don't see it under settings. Should I back the game up?
I dont think "unlock" is the right word. If you want to play steam offline, you will need to download all the updates for it, then go into the settings and enable offline mode.
mrjack said:Supposedly you have to update your game, then exit Steam completely. "Pull" out the RJ45-cable (modem/network) and then start up Steam. Steam should then go into offline mode and you should be able to play HL2 offline.