Holy cow what a clever game! And such juicy presentation.
I got stuck twice: At the first enter-three-digits puzzle, didn’t realize I’d be entering them left-to-right (was assuming it would be the order of travel, right-to-left). And then was completely stumped by the upside-down cursor puzzle, had to look in the comments to find the answer to that one!
Probly the best I’ve seen here so far, great work!