- Sounds: https://opengameart.org/content/63-digital-sound-effects-lasers-phasers-space-etc and https://opengameart.org/content/51-ui-sound-effects-buttons-switches-and-clicks
- Credit for all assets: https://www.kenney.nl. Donations are suggested.
Tilemaps created with https://www.mapeditor.org/, donation suggested.