There are a few ways to delete games from 3ds. The most common way is to use the game’s uninstaller. To uninstall a game, open the game’s folder and find the “uninstall.exe” file. Double-click on it and follow the prompts to uninstall the game. Another way to uninstall games is to use Nintendo’s online service. To do this, go to Nintendo’s website and sign in with your account information. Then, click on “My Games & Apps.” Under “Games,” select “3DS.” On the left side of the screen, you’ll see a list of games that are installed on your 3DS. Select one of these games and click on “Uninstall.” If you don’t have an account at Nintendo, you can also uninstall a game by going into Settings and selecting “Manage Game Content.” There you’ll find a list of available content for your 3DS that has been removed or changed since you last used this function.