Some people here were asking for it so I quickly vibe forked a speed control slider for farming some karma here on Hacker News:
https://francisduvivier.github.io/eternal-struggle-with-spee...
Code: https://github.com/francisduvivier/eternal-struggle-with-spe...
Not to alarm anyone, but when I ran this, the black ball eventually joined the dark side and the whole thing ended up black. I’m sure this doesn’t mean anything for the greater universe.
This happened to me in the original site. I think it happens when the white and black balls collide at the exact same spot of the border.
I think it's just a tunneling bug that happens when the point that make up the wall get messed up a enough. Almost never happens anymore in the v2[1] that I added. This one also allows you to see these points.
[1] https://francisduvivier.github.io/eternal-struggle-with-spee...