To play Amazon Luna Cloud Gaming on Android, Apple iOS, and Amazon Firestick, you can follow these steps:

• Android: Make sure your Android device is running Android 9.0 or later.Open the Google Play Store and search for "Amazon Luna."Download and install the Amazon Luna app.Open the app and log in with your Amazon account.Follow the on-screen instructions to complete the setup process.Once set up, browse the available games and start playing.

• Apple iOS: Ensure your Apple device is running iOS 14 or later.Open the App Store and search for "Amazon Luna."Download and install the Amazon Luna app.Launch the app and sign in using your Amazon account.Set up the Luna controller if you have one or use a compatible Bluetooth controller.Browse the game library and start playing.

• Amazon Firestick: Ensure your Firestick device is connected to your TV and the internet.From the main menu, select the "Search" option.Type "Amazon Luna" and select it from the search results.Install the Amazon Luna app.Open the app and sign in with your Amazon account.Follow the on-screen instructions to set up Luna on your Firestick.Once set up, you can start browsing and playing games.Remember that a stable internet connection is crucial for smooth gameplay while using Amazon Luna on any platform. 

Also, note that certain games and features may have specific requirements, so make sure to check the Luna website or app for any additional instructions or compatibility details.