Yes. It’s very easy. There’s really two ways to do it. You can actually open Steam and add non-steam games to steam if you want it all in the same place. Otherwise you can use something like Lutris, which is what I do. That gives you a nice place for everything also and you can even load your Steam games on. But yes you can absolutely use GOG stuff and exe files.
What would adding the games to Steam accomplish? I assume I can’t just log on to my account and have the required files to download and install the games since they’re not originally from Steam. Or is it just a matter of being able to launch them once they’re added to the client? Or a convenience thing?
Yes. It’s very easy. There’s really two ways to do it. You can actually open Steam and add non-steam games to steam if you want it all in the same place. Otherwise you can use something like Lutris, which is what I do. That gives you a nice place for everything also and you can even load your Steam games on. But yes you can absolutely use GOG stuff and exe files.
What would adding the games to Steam accomplish? I assume I can’t just log on to my account and have the required files to download and install the games since they’re not originally from Steam. Or is it just a matter of being able to launch them once they’re added to the client? Or a convenience thing?