"game-changer." YourDictionary, n.d. Web. 14 January 2019. <https://www.yourdictionary.com/game-changer>.
game-changer. (n.d.). Retrieved January 14th, 2019, from https://www.yourdictionary.com/game-changer
or game changer
An idea or event that significantly changes the way something is done or thought about: “A few years ago, New York baker Jim Lahey gave us a method for no-knead artisan loaves…. Calling for much less hands-on work than other recipes, it was a game-changer in the world of bread baking” ( Amanda Gold )