According to the website of the makers, it's not a mod on the console but an add-on, so it will not void the warranty.
It certainly is a different kind of game, which makes it hard at times to place a concrete genre on it. Some people say it's horror and some people say it's not. It's kind of a grey zone game.
According to the website of the makers, it's not a mod on the console but an add-on, so it will not void the warranty.