while the game indeed uses AGS it uses a modified engine.
the demo and the game probably too will not run on the engine available at github.
@ssf, unless I miss it, the website and gogs + steam doesn't say the game use AGS.
nope, read the system req!
Forum topic: Turn off design decission
you could try the low res & free AGS edition of chapter 1:
Forum topic: Not open source
looks like the code is open but the graphics are not...
I also added a new tag: http://lgdb.org/category/source/partially-open-source
Forum topic: Option to scrape Steam
This would be as easy as checking the directories in the steamapps directory. However I am sure lgdb staff does not have the resources to develop this. If you are interested though I'd love to help you plan and test this software.