Offline installer for adventureland is still:
setup_spirit_of_the_island_-_adventureland_2.1.0.1.1_(67980).exe
that is WAY behind 3.0.3.0
The following is from GOG SUPPORT CENTER Downloads & Installing General information:
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Do I need some launcher application to play my GOG games?
No, you don't need any additional apps or launchers. All games downloaded from GOG are nicely wrapped in a self-executable (exe) setup file, some of the larger games are accompanied by binary files. See this support article for how to download the offline installer.
So after you downloaded the setup files, just double-click the exe file to install the game on your hard drive. After the installation is complete, shortcuts will be added to your Start Menu, desktop and Games Explorer, so you can launch your game just like any other. As for movies, you can either stream them directly from the site, or download them as mp4 files, which you can them play with your favorite video player (
https://www.gog.com/account/movies). Couldn't be simpler.
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That statement is simply false for the adventureland version of this game.
We can not get that without installing a launcher application = GOG Galaxy first :-(((
(except for a seriously outdated game version)
Actually this has cased me to not wanting to buy more games from GOG.
If additional launchers is needed anyway then why not simply use steam (where updates usually arrives first anyway)