Thanks for the detailed reply! As I mentioned, it only started after level 25 and nothing has changed about my drive setup. I'll try again and if I still have issues I'll get you the file.
Yeah, it was my Pi1541 - you have to push the button to save changes to a .d64. I guess it works without it sometimes, but not always? Anyhow, I've made it to the final level! This is such a cool game and a unique idea, amazing work!
