Just where do you disable all of its features? It's not in any settings menu that I'm aware of. If you know how to disable Steam client updates, I would be most interested in the process of doing so. I know you can disable automatic game updates, but are we still able to play the game without downloading the update in online mode? My understanding is that to download an update on another computer is basically to copy all the files that were modified. Not exactly an option unless you have a list of all the files changed or you're willing to copy the entire installation, and either way you're in trouble if the executable was updated (Steam would have to reauthenticate as far as I'm aware).