CocoaChina has announced that Fishing Joy makes over $6 million a month in revenue. The free-to-play mobile franchise has an audience of over 10 million DAUs.

The game saw revenue of $6.28 million in February (a 100 percent increase over two months prior), which CocoaChina attributes to the introduction of carrier billing with China’s three largest wireless operators. Most of the revenue comes from the Chinese Android store, which has a much larger share of the market than iOS given the popularity of Android compared to iPhones in China.