UbiSoft give for free the Assassin creed unity game on their platform UPlay, in the honor of Notre Dame, that burned recently , it's a cool gesture. , end 04/24/18.
Go here to add the game in your uplay games list or register on Ubisoft to install Uplay program and add the game in your account.
www.ubisoft.com
It's accurate 3d modeling of Notre-Dame in the game.
Some old interesting videos on youtube:
-https://www.youtube.com/user/bebopsam1975/videos
-https://www.youtube.com/user/rhineflow/videos