As some of you may know, Assassins Creed Unity was centered around the Cathedral at Notre Dame. The in-game 3d models of the cathedral were apparently unusually detailed. A level artist at the studio spent years cataloguing it to make sure every brick was in the right place. While the extraordinary attention to detail may have been lost on many players of the game, in the wake of the cathedral fire resulting in the partial collapse of the 8 century old church, the 3d models in the game may wind up being a very useful tool as part of the reconstruction process. I've never played any game in the Assassins Creed series, but now I am actually tempted to check it out.