If your device is at a certain age - it may come to be that you can no longer update your operating system. This will affect which games you can download from your App store.
For Android - 6.0 and above will be adequate for our games
For iOS - 9.0 and above will be adequate for our games.
If you can no longer play your game on your device - Don't worry, we will keep your data safe on our servers for you to resume when you're ready.