This was really fun and I like that there's a level editor also!
I like the turn by turn aspect of it but having to keep clicking the button to move forwards sometimes got tedious, especially one one of the tutorial levels where I forgot to switch off the lights on the stations so both trains went through and I had to send them all the way around again :D I thought maybe some sort of auto step thing would be cool that could be turned on if you just want the trains to do multiple turns in a row and that would go quicker than manually clicking.