I saw the freezes too, but there wasn’t any panic. I have no idea what that might be. It also never crashed on desktop during development.
The idea of planing was to plan some connections and to get the amount of money needed. Yea, might not have been absolutely necessary.
Yea, you basically need to build a minimal spanning tree. I was hoping for the intro text to carry all necessary information on what to do. Not sure how I can teach the player better.
Once you win a city, the “congratulations” dialog contains a leaderboard, but as it is only for the level in question, it might not include many entries.