Thanks so much for your kind words and for playing :) It was a lot of fun to make!
I wrote up an article on my pipeline for this game as I've had some people asking about people are making games with LLMs right now.
https://www.linkedin.com/feed/update/urn:li:activity:7352751414655315970/
TLDR: I use claude to create vanilla html/javascript/css games - starting with an index.html and refactoring into more bite sized pieces once it starts getting too large. I also use VS Code to preview and run my game while testing.