I created a downloader for linux if anyone is interested. It's written in perl, and requires about a million modules. It does not log in as such, but instead requires you to log in with firefox and then fetches cookies from firefox (using a firefox extension called MozRepl ), I can clean it up and publish it if anyone is interested.

I had my first encounter with gog.com this weekend and bought a gadzillion cheap games and got tired of downloading every single file. So that script was born.

I am new to gog and don't know if this is of interest to anyone, but if it is, I can polish it and publish it.

It aims to play nice with the server, but some minimal linux knowledge would be nice in case something goes awry.

In short it does this:

*) collects your games from the shelf on gog.com
*) checks all files of every game with a HEAD request. This does not download the file but gets some data for it. If size does not match, it assumes downnload has been interrupted and resumes it, if a new file has entered, it downloads it.
*) It downloads at most 3 in parallel.
*) parent directory to store games is hardcoded in the script for now, but easily changed. Each game has a subdirectory under this that is the title of the game as it is presented on the site (including things like TM-characters)

A valiant effort, but there is something similar and I think in a bit more advanced state:
http://www.gog.com/forum/general/lgogdownloader_gogdownloader_for_linux
+1 nonetheless.

Ah, that seems to make my efforts in vain, thank you for that link

T.