While all our games are free to download, they do contain in-app purchases. You can play entirely for free, but making purchases can help you speed up your progress and increase your in-game resources.
You can limit or disable in-game purchases in your device's settings. The exact process depends on the type of device the game is installed on, whether it be an iOS device (iPhone, iPad, etc.) or Android device.
Check the following articles to learn more about how you can protect yourself from unwanted in-game purchases:
Preventing accidental and unwanted purchases on iPhone, iPad, or iPod touch
Preventing accidental and unwanted purchases on Google Android devices.