Comment by gamesieve

4 hours ago

There are no games on GOG which require a PlayStation account for their single player gameplay. (AFAIK, but I think I'm pretty tuned in and would know.)

It was an early complaint about Horizon: Zero Dawn, especially but not uniquely, on GOG. Sony did walk that requirement back several months after the complaints started, but it wasn't directly because they thought they violated any of GOG's explicit policies, it seemed more directly due to the user complaints and review bombing on Steam from what I saw.