A quicksearch for Pocket Game and Innogames will show you that
"The German studio saw €220 million ($266 million) in revenue, a rise of 15 per cent year-on-year. Furthermore, it is the 14th consecutive year that the company has experienced financial growth......Forge of Empires played a huge part in the company's growth, as did Elvenar, Tribal Wars and Grepolis. Across both web and mobile platforms, InnoGames portfolio had a 13 per cent increase in average revenue per daily active user."
another artilce shows that " Both browser and mobile platforms performed strong to contribute to the 13 percent increase in Average Revenue Per Daily Active User (ARPDAU) across InnoGames’ whole portfolio. "
Some other "numbers:
$552 million was brought in by mobile strategy Forge of Empires, InnoGames’ most profitable title;
$100 million was generated by Tribal Wars, the company’s oldest game;"
And finally:
"The company’s largest title, Forge of Empires, came out in 2012. It helped InnoGames transition from browser-based games to mobile.
This transition became the main driver of the company’s growth in the global market, according to CEO Hendrik Klindworth. Revenues from the mobile segment are growing at an average rate of 56% per year. Mobile games have also generated the most registrations,"
Many more details available if you are patient enough to drill down into the financial statements, whcih is what you do if you understand business, and care about facts instead of BS. It is a fact that what drives their profits are player generated revenues.