Just bringing attention to this great little freeware game developed by code paradise. Ive personally played this and its a great interactive way to explore 3d fractals with some gameplay elements. its fairly short and only has a half dozen levels or so but i still recommend to anyone who enjoys games and or fractals to give it a go as it offers a different kind of interactiviy! 

https://www.youtube.com/watch?v=9U0XVdvQwAI&t=10s
https://codeparade.itch.io/marblemarcher

Linkback: https://fractalforums.org/other-artforms/20/marble-marcher-a-free-game-about-racing-a-marble-across-3d-fractal-surfaces/3638/