Coins are the primary currency for buying hoverboards, power-ups (like the Jetpack, Coin Magnet, and 2x Multiplier), and board upgrades. In this mod:
The standard version of Subway Surfers (v1.13.0 at the time of this writing) is a free-to-play game supported by microtransactions. The Mod APK (Android Package Kit) is a hacked version created by third-party developers. Coins are the primary currency for buying hoverboards,
Check the "Me" section for specific tasks that reward large amounts of keys. power-ups (like the Jetpack