# the facts
On November 10, 2015, exactly 11 years ago, Fallout 4 was released.
Interestingly, the famous Psin dog was created on the basis of a real German shepherd called River, owned by the leading level designer Joel Burgess.
The developers regularly brought the River to the office, photographed it, recorded the sounds and observed the behavior.
And River's impact was far more than just creating a realistic model, and by watching the dog, the developers decided to make the dog not just a combat assistant, but a real friend who is always there for the player.
Even the characteristic behavior of the Swan in battle, when he holds back an opponent rather than inflicting serious damage, is partly inspired by River's habits.
Unfortunately, in 2021, River passed away, and Joel Burgess dedicated a touching farewell message to her, noting that she was not just an inspiration, but a full-fledged part of the development team.
#game