The mobile gaming market in the second quarter of 2021 experienced notable shifts in genre performance and publisher dominance across the United States, China, and Japan. The primary objective is to provide a comparative analysis of these regional markets, highlighting evolving trends in genre market share, publisher success, and the increasing importance of live-service feature updates. The analysis utilizes a proprietary taxonomy and motivation framework, supported by a survey of over 7,000 mobile gamers in English-speaking western countries, to categorize games and identify player archetypes. Key findings indicate that the United States saw a decline in the Puzzle genre’s market share, while the Strategy genre experienced significant growth. In Japan, the Sports genre continued to gain momentum, largely driven by the success of titles like Umamusume Pretty Derby, while RPGs faced a decline. China exhibited a trend reversal from the previous quarter, with RPG and Strategy genres regaining market share at the expense of Shooters. Publisher performance was marked by strong results from Supercell in the US and Cygames in Japan, while Leiting Games nearly doubled its market share in China. A critical trend identified is the 37% year-over-year increase in feature updates, with Strategy games leading this surge at 208%. Developers are increasingly prioritizing engagement through non-recurring live events and limited in-app purchase offers, which saw frequency increases of 143% and 122%, respectively. These features are becoming essential for retention and monetization across major genres. Furthermore, player motivation data reveals that games appealing to fast-paced action and competitive play continue to dominate the top-grossing charts in the US, with specific archetypes like King of the Hill and Skill Master remaining highly relevant.