Marble Marcher is a marble racing game by CodeParade. It plays a bit like a futuristic Super Monkey Ball tech-demo: race as a marble along an evolving procedurally-generated map to reach the finish flag.
The game has 24 maps available, each throwing you into different environment or challenge. Some levels evolve underneath as you make your way to the flag, meaning that you can never quite predict the correct path. You even face the risk of being crushed if the fractal closes in on you. Others offer a more technical challenge—fast and precise movement is required to get to the end of Beware of Bumps, or else you'll fall right off the fractal. There are even novelty ones: the object of Hole in One is to drop through a hole in the center of a fractal, to reach the flag on the other end.
This game is worth checking out purely because it's impressive from a technical standpoint. It uses a unique fractal physics engine with procedurally generated maps and ray-marched graphics. Because of this, this game is computationally intensive—the game requires a dedicated GPU to run at 60fps at a reasonable resolution. I'm unqualified to comment on the math, so it's worth checking out a short video from the developer that dives a bit deeper:
Sure, even though this game is mostly a tech demo, it's actually enjoyable. The variety of levels means it's easy to get about 30 minutes of enjoyment out of it, especially if you like Super Monkey Ball style games.