If there is anybody who is still worried about the decline of the mobile game industry, Niantic Labs and Pokémon GO have 200 million reasons to say otherwise. The global, mobile sensation is technically on pace to reach 2.4 billion dollars in revenue (which is of course impossible), but with consistent updates and creative marketing, surpassing one billion dollars would be (amazingly) within reach.

Source: https://techcrunch.com/2016/08/07/pokemon-go-crosses-200m-in-global-revenue-one-month-into-launch/

Image Source: By Health Gauge [CC BY 2.0 (http://creativecommons.org/licenses/by/2.0)], via Wikimedia Commons