Loved this concept, and had a lot of fun playing it. The early tutorials could use a little improvement to clarify the mechanics, but once I got the hang of it I found it very addictive. It'd be great if there was a creative way to give more hints about how the current route has failed, as sometimes I felt I was just adjusting my map with guesswork, but I appreciate it may be hard to balance that while maintaining the challenge. Overall really cool, and surprising depth!