Yesterday I started to try to fix this, but changes on account page are deep, so it's a bit hard to do. In next days I'll try to see if I can make a port of the official downloader under linux.

Query the AJAX script handling page loading until the response html is empty
(https://www.gog.com/en/account/ajax?a=gamesListMore&s=title&q=&t=0&p= + page number, page numbers start at 1)
Find divs with class "game_li"
Get the id value and take the game id number from it
Query the AJAX script handling game details with the game id
(https://www.gog.com/en/account/ajax?a=gamesListDetails&g= + game id)
Parse html to get links

Responses for AJAX queries are formatted in JSON so you probably need a JSON parser or use some regex magic
I thought about doing that also but it's a legal grey area that I didn't plan on going near (assuming that you're working with decompiled source code)

Thanks Sude :)

Just want to see if it is going to work and then, if so, want to ask to GOG team what to do... Don't think this is such a bad thing.

I downloaded it and when i tried to login, it just said login failed and i checked and I had the right login. so i wondered if there was something i was missing out?

(my os is windows 7 if it helps)

The application is not working after site change... I have to update it, but I need a bit of time

Has this project been abandoned then? Last response and update was 7 months ago, and the same issue still seems to persist. Unfortunately it's the only GUI based client apart from the official downloader there is. Does this mean CLI is the only type left to go to if the official one doesn't have all the functionality a person could wish for? :o

I am sorry, but I have been really busy since the gog site update. I haven't had enough spare time and have realized only some projects for myself.
Maybe sude's downloader is still working, if you want to try it.

Cool, thanks. Hope all goes well for you, and I hope that I'll be able to use your awesome creation once again in the future at some point. Thanks once again and good luck in all your endeavours ^-^

link is dead

if you are interested, there is currently a Java port of Sude's lgogdownloader in development:
http://www.gog.com/forum/general/xgogdownloader_java_port_of_lgogdownloader_wip

A version with GUI will be hopefully created. But I need some support, any help and donations are also very welcome

Sure, leave an address.

What address do you mean?

I'm not a programmer but I can send a donation at some point.

This would be very helpful as I have currently no job as student and have to take the time for the project so I have less time for looking for paid jobs.

I love to give something back to the community and help with my programming skills so I hope the community likes what I do =)

Everyone can help, also with testing, ideas, donations, programming, ...

I have sent you a message ;-)