All assets are under public domain (CC0):
| Name | Author | Link |
|---|---|---|
| Tuffy 1.1 font | Thatcher Ulrich | Ulrich's fonts |
| sounds/resources/doodle_pop.ogg | MrZeusTheCoder | public-domain |
| tennis/resources/ball.wav | MrZeusTheCoder | public-domain |
| opengl/resources/background.jpg | Nidhoggn | Open Game Art |
| shader/resources/background.jpg | Arcana Dea | Public Domain Images |
| shader/resources/devices.png | Kenny.nl | Game Icons Pack |
| sound/resources/ding.flac | Kenny.nl | Interface Sounds Pack |
| sound/resources/ding.mp3 | Kenny.nl | Interface Sounds Pack |
| win32/resources/image1.jpg | Kenny.nl | Toon Character Pack |
| win32/resources/image2.jpg | Kenny.nl | Toon Character Pack |
| sound/resources/killdeer.wav | US National Park Services | Bird sounds |