| Danny C. Yun | Upcoming feature ideas |
| 59 Days of Code | inducing the project |
| Museo font (700), free | Used in many scenes (old PlayN game) |
| FreeSans Semi Bold | Used on some achievement (old PlayN game), leadership board badges (old PlayN game) |
| Cards | True Type Font by Gyula Zsigri, used for the card suit drawing and the joker crads (new Flutter game) |
| Musicals | Curvy font by Brain Eaters Fonts, used for title drawing of the home page and the game over page (new Flutter game) |
| Roboto Condensed | by Google, used for drawing the card values and all the information except the Musicals font titles |
| Kevin MacLeod | all music |
| Sound effects from freesound.org |
| robinhood76 | dog howl effect |
| fartheststar | clay ship effect (single effect) |
| artordie | clay ships (long effect in the background) |
| heigh-hoo | fireworks effect (one blow) |