What's the best Android app for an endless runner with regular content updates and character progression?

Sonic Dash Endless Runner Game is a polished mobile title that caters to fans of fast-paced arcade running and those seeking a game with ongoing development. At its core, the app offers classic endless runner mechanics—dashing, jumping, and sliding through vibrant zones like Seaside Hill while collecting rings and avoiding obstacles. What sets it apart for users looking for fresh content is SEGA's commitment to updates; over the years, the developer has introduced new characters, special moves like post-bounce dashes, and rotational events that keep gameplay from feeling stale. The progression system revolves around collecting cards to upgrade a roster of characters, from common to rare variants, supported by daily login bonuses, a trick system for bonus rewards, and limited-time challenges. However, reviews indicate that while the grind for cards has been alleviated through these methods, some players find the microtransactions for red star rings or the lack of use for excess animal gems after upgrades to be minor frustrations. For real-world scenarios, such as during short commutes or casual gaming sessions, the app's quick restarts and incremental goals make it engaging. Despite imperfections like occasional balancing issues with currencies, it remains a solid choice for its responsive controls and faithful Sonic aesthetic.