Welcome to the GOG and Steam page. Here I will post differences between games from these two giants. Why? Because both have their own differences which are positive and negative. Remember, just because the game is on Steam, does not mean it's good. There are issues and sometimes you have to get it from a different shop if you want to enjoy the game you wanted so much.
IF you don't know what's GOG, i don't blame you, but to simply put it short it's a digital distribution page which aims for distributing DRM-Free games and make older ones work with modern PCs, there is a client called Galaxy but it is completely optional. Meaning you don't have to install it to play the game. It's up to you if you want to use it or not. Since games downloaded from GOG are in a form of a installer, you pretty much can do anything with it such as burn it on disk or keep it at the external HDD, which Steam cannot do this btw as all your games are tied to your account.
That is all.
P.S Sometimes I may include the retail version of the game in comparison.
