# Structure The only structure you are required to comply is having an assets folder with two sub folders: audio and images. An example: ```dart Flame.audio.play('explosion.mp3'); Flame.images.load('player.png'); Flame.images.load('enemy.png'); ``` The file structure would have to be: ``` . └── assets ├── audio │ └── explosion.mp3 └── images ├── enemy.png └── player.png ``` Don't forget to add these files to your `pubspec.yaml` file: ``` flutter: assets: - assets/audio/explosion.mp3 - assets/images/player.png - assets/images/enemy.png ```