Steam question

Hi forum,

I am wondering if my internet stops, how i would be able to start Garry’s Mod
I made the experiment, using “unplug cable” and if steam wants to update itself it cant because it is kinda impossible. After minute or two it asks me “Reconnect” or “Offline mode”.
The reconnect is pointless, so i choose offline mode and it crashed because i do not have connection or something like this.

Any help …

Start offline mod once online, and I believe it will download all the necessary files required for offline mode in the future.