Comment by CopperWing
6 hours ago
Which ones? Honest question. I only remember games for which GOG apologizes in their store page for missing cosmetics or extra features because originally tied to online services (e.g. the Mafia or Yakuza games), or ones in which they are unlocked by default for the same reason (e.g. Dragon Age Origins).
https://www.gog.com/forum/general/drm_on_gog_list_of_singlep... has a full list.