1. Launch the App Store on your mobile device
2. Tap the Update button at the bottom of the screen
3. If there's an update available for the game, it'll show up on the list

Tap Update button near the update description to download it.

You can also set up automatic updates for your installed apps:
1. Go to Settings -> iTunes and App Store
2. In the Automatic downloads section turn on the Updates feature

Please note that updates are provided to players through their respective app stores, which may take some time, as each store has its own timeline to check for updates before they are released.