Thanks for playing and for the feedback!
Yes probably a solution for the flashing cursor/prompt could be to invert the colors, when I actually was playing and testing I was always looking at the code ahead so I totally ignored that issue lol.
Certainly the math hack game was the less intuitive to figure instantly, having the stack of equations from bottom to top wasn't the best idea either, and marking the current one to solve could have helped, Had that as a TODO usability task but was totally exhausted the last day hehe.