Ensure your console is connected to the internet.
To keep the game current, enable in System Settings.
Your Nintendo Account must be set to a European country (e.g., UK, Germany) to access the EU version of the eShop. Download Captain Toad: Treasure Tracker (EU) | ...
Input the 16-digit download code and confirm to add the game to your library.
Verify you have at least 2 GB of free space on your system memory or a compatible microSD card. Purchase and Download via Nintendo eShop Open the Nintendo eShop from the Home menu on your console. Ensure your console is connected to the internet
Select the game from the results. You can also try a before buying.
Alternatively, highlight the game icon on the Home menu, press the , and select Software Update > Via the Internet . Input the 16-digit download code and confirm to
If you purchased a code from a retailer like the My Nintendo Store (UK) , open the eShop. Select on the left-hand menu.