Hi,

if I connect gog and steam are my games displayed as "in library/already bought" in each others store?
For example if I bought "Darkest Dungeon" on Steam, will it then be shown as "in library" when I browse
the gog store?

No.

No, why should it?

EDIT: Ninja!

I would be the reason I link gog and steam. Every now and then I am not sure, if I already own a game on steam or gog
and have to look it up. It already has happened that I bought a game on gog which I already payed for in a slightly different version on steam.

Tag 'em all! ;)

I've created three categories on Steam:
- Games that I already have on GOG too,
- Games that I haven't yet on GOG, but they are in GOG Store available,
- Some other random games.

That is true, but from GOG's perspective it is "better" if you buy a game on GOG, regardless of the fact you have bought it somewhere else already. So i think it is less likely for them to implement features that would facilitate this "overview"

Put all your games in an Excel file, create a column that has store information, like "Steam" or "GOG".

Then create a dropdown filter on top of all rows, that way you can see all your GOG games with one click, or Steam games with one click.

I don't think any store will have this kind of function for you, as each store wants you to buy everything from them.