Not reliably as in Steam there is no contractual limitation on games having their own phone-home DRM plus some games are tightly integrated with Steam features (which Steam incentivizes) and don’t work well offline, plus you need to known were the installers are cached as you can’t just download them to a location of your choice and how to use stuff like the Goldberg Emulator otherwise only games which have ZERO integration with Steam will fully install and run offline.
In GOG, access to download the offline installers is right there in the product page in your library and contractually the games can’t have any DRM as “No DRM” is GOG’s unique value proposition as a games store.
Steam doesn’t make it too hard to go around the phone-home DRM they put in place (making it better than just about all other phone-home DRM out there) but that’s not at all the same as “here are the installers for you to use whenever you want online or offline and they’re guaranteed to have no DRM”.
Not reliably as in Steam there is no contractual limitation on games having their own phone-home DRM plus some games are tightly integrated with Steam features (which Steam incentivizes) and don’t work well offline, plus you need to known were the installers are cached as you can’t just download them to a location of your choice and how to use stuff like the Goldberg Emulator otherwise only games which have ZERO integration with Steam will fully install and run offline.
In GOG, access to download the offline installers is right there in the product page in your library and contractually the games can’t have any DRM as “No DRM” is GOG’s unique value proposition as a games store.
Steam doesn’t make it too hard to go around the phone-home DRM they put in place (making it better than just about all other phone-home DRM out there) but that’s not at all the same as “here are the installers for you to use whenever you want online or offline and they’re guaranteed to have no DRM”.