https://www.gog.com/en/game/god_of_war
Enter the Norse realm
His vengeance against the Gods of Olympus years behind him, Kratos now lives as a man in the realm of Norse Gods and monsters. It is in this harsh, unforgiving world that he must fight to survive… and teach his son to do the same.
Grasp a second chance
Kratos is a father again. As mentor and protector to Atreus, a son determined to earn his respect, he is forced to deal with and control the rage that has long defined him while out in a very dangerous world with his son.
Journey to a dark, elemental world of fearsome creatures
From the marble and columns of ornate Olympus to the gritty forests, mountains and caves of pre-Viking Norse lore, this is a distinctly new realm with its own pantheon of creatures, monsters and gods.
Engage in visceral, physical combat
With an over the shoulder camera that brings the player closer to the action than ever before, fights in God of War™ mirror the pantheon of Norse creatures Kratos will face: grand, gritty and grueling. A new main weapon and new abilities retain the defining spirit of the God of War series while presenting a vision of conflict that forges new ground in the genre.
It’s almost certainly still going through steam. Steam has a .dll in all your game folders and it interacts with Steam. You don’t have to launch it through the launcher for it to use Steam. If you ever pirate a game and look at the crack files, there will often be that same name .dll in it. This is to bypass that Steam interface. If the game came from GoG it won’t even have a crack. It just works.