There are a bunch of solutions on Github but I'm not sure how to judge these ones.

Which solution here was the most interesting to you? Were there any bugs or solutions that were clearly sub optimal?

A tag search returned two repos with solutions for ropemporium:

https://github.com/topics/ropemporium

Thank you for challenging me on my choice of wording. I shouldn't have suggested that the repo was interesting without properly exploring the contents myself. I only discovered that git repo after reading the article this morning and since I am at work I have not been able to explore the code myself. I posted the link just to share it with anyone else that might be interested.

A regular Github search turns up half a dozen more. It feels like you've intentionally limited yourself to the less commonly used tag search in order to attempt to prove a point that isn't there.