Hi, sorry to post it here, but I can't seem to figure out if I have the DLC 400 Days, I never realized I actually purchased TWD on GoG, but at the same time I actually have no clue if I actually purchased 400 Days, with it gon e I can't really double check it either. (Or maybe I can, but I am actually clueless.)

Does it really work like that?
I also own all the Mafia III DLC but for some reason they don't show up.

Since 400 Days is a DLC of the main TWD from Telltale

For GOG Galaxy:
Go to "The Walking Dead: Season 1"->More->Backups & Goodies and it should be listed under "DLC BACKUP COPY" if you have it.

For the Browser:
Go to "The Walking Dead: Season 1" and check under the Offline backup installers and it should be listed under "DLC installers".

:)

Thanks, seems that I do have 300 days as ''DLC BACKUP''! Thanks a bunch!

Happy to help :)