DOOM 3 is probably a tech demo first and a game later but from all the other examples we have (Crysis, GTA 4 and etc), it might be the best one.
These games arriving on GOG was a surprise, i bought and finished most of them on Steam so i can say with confidence this one of the best series i ever played and this game is probably the best of the bunch. Unfortutanely, Yakuza: Like a Dragon is still missing on GOG (probably because of Denuvo) but maybe SEGA can make a DRM free version of the game later.
