SirPrimalform: It didn't mention Galaxy for me so I'm not sure why that's relevant. GOG.com is GOG.com whether you use Galaxy or not.
Lemon_Curry: It is because they're asking you
on which of the platforms you currently
play video games at least monthly – and because there's an option simply called 'PC (excluding Steam)'.
That's how I read it. I buy games on gOg. I play them on a PC with no client-platform software.
DubConqueror: I'm already stuck with a question about the 4th question: "Which of the following platforms do you currently play video games on at least monthly?"
Should I choose GOG.com as I mostly play games bought from GOG.com
or should I NOT choose GOG.com as I don't use the PLATFORM Galaxy but play standalone games instead?
You'll have opportunities, later in the survey, where you can enter your own info.