CthuluIsSpy
Arcane
Eh, they've been having giveaways for a while. There was even a feature called GOG connect that is sadly no longer supported where if you had a game on steam you can get it on GOG for free.
GOG have always been pretty generous to the community. Which is one of their strong points, really.
GOG have always been pretty generous to the community. Which is one of their strong points, really.