Asteroids:
Asteroid images by Cayden Franklin at https://opengameart.org/content/pixel-art-2d-asteroid-pack
Ships:
- ship.png by scofanogd at https://opengameart.org/content/spaceship-9
- shuttle.png and shuttle2.png by Xevin at https://opengameart.org/content/simple-spaceship
- SpeceShip2.png by Casoday at https://opengameart.org/content/spaceship-12
Bullets:
Master484 at https://opengameart.org/content/bullet-collection-1-m484
Background music by Niccolo' Toscani https://www.instagram.com/niccolo_toscani?r=nametag
Sound effects by SubspaceAudio at https://opengameart.org/content/512-sound-effects-8-bit-style