"The Walking Dead" is a cult franchise about human survival in a world that has experienced a zombie apocalypse. The American consulting company Owl & Co. calculated that the video games created within this franchise have collectively generated over a billion dollars in revenue.
According to Owl & Co., the highest-grossing game became The Walking Dead: Road to Survival. This now-defunct mobile RPG was released by IUGO Mobile Entertainment and Scopely in the summer of 2015. It is reported that this game alone earned about $500 million and garnered 100 million downloads.
The revenue of some other games in "The Walking Dead" universe, according to Owl & Co.:
The Walking Dead: The Telltale Definitive Series collection — over $300 million;
The Walking Dead: Saints & Sinners — over $100 million;
The Walking Dead: Survivors — over $100 million.
Owl & Co. did not provide data on other games in the franchise.