How do you get gta on a kindle fire hd6?

To get Grand Theft Auto (GTA) on a Kindle Fire HD 6, you can download it from the Amazon Appstore if it's available. Alternatively, you can sideload the game by downloading the APK file from a trusted source and then installing it on your device. Make sure to enable "Apps from Unknown Sources" in your device settings before attempting to install the APK. Keep in mind that performance may vary, as the Kindle Fire HD 6 is not primarily designed for gaming.