You can NOT press the "Play" button for custom games in GoG Galaxy, if the GoG servers are offline.
What the actual flying fuck?! :blobcatdizzy:
Another reason to fully swap over to Playnite :blobcatthink:
Edit:
Apparently the buttons work after a while.
It's still a bad experience and not acceptable.
The servers are not needed for 3rd party offline games, at all.
Playnite is pretty neat.
I love to see statistics based on my whole game catalogue like that, even if I have to set some values, manually.
Even better: It's open source.
The only things I don't like, so far:
It does not support the PlayStation library.
It does not show my online friends from Steam and XBox directly in the application.
There is no indicator for how many games match the current filter.
Also the Battle.net plugin needs the login credentials after every restart of the application or longer periods of being idle.
But that's Blizzard's fault.
It's the same for the GoG Galaxy 2.0 plugin.