How you download perfect dark xbla?

To download Perfect Dark from Xbox Live Arcade (XBLA), you need an Xbox 360 console or an Xbox One that supports backward compatibility. Navigate to the Xbox Store on your console, search for "Perfect Dark," and select it from the results. Once on the game's page, choose the option to purchase or download it if you already own it, and follow the prompts to complete the download. After it's downloaded, you can find it in your game library.