Mostly all games with "windows only support" run in Dosbox, Scummvm or Wine. But a few does not. It Would be nice with a symbol to indicate, what games can run successfully outside the non-native system. I recently joined GOG and have around 100 games in my account. Mostly these are "Windows Only" - I have been able to play every single one on my Gnu/Linux system. But there are some games that simple can't be played without a native platform. And to be able to avoid these would be awesome

A symbol or anything would make it kind of official and GOG cannot have that.

We use this thread here: https://www.gog.com/forum/general/the_judas_does_this_run_in_wine_thread_v1173

I don't. I won't touch that awful thread or its partner, the stickied Linux general troubleshooting thread, if you hold a gun to my head. If a subject merits thousands of posts, give it a subforum. While these threads might be useful for new people who don't care to search and just want ot post their questions, they are just as useless as irc/discord in that you can't really search for the answers that have already been posted.

In any case, it is impossible to say "works on wine" with a single symbol. Some things work on wine only if you have a particular set of conditions (e.g. what version of wine? what native libriaries? what additional tricks? what video drivers? what audio drivers? what controller? etc.). Wine is an unreliable target at best.

I do think that gog should offer Linux versions for games which use scummvm, dosbox and ags, but gog doesn't care. Even for the games they do package for Linux, I use my own versions of these instead of what it's packaged with. Sometimes that's even mandatory.