I know how to make it better.
What would be great is if you start losing points when a player has to click multiple times to navigate down the road. so each "step" would cost them.
Also there should be a way of having 2 people playing coop. which could be done with ajax so people who are in different countries can play together, currently I am playing it with a friend in israel on teamviewer. So he can see my screen.
I Love geography and exploring places too so thanks for making this site of yours
May we meet in the future, I hope so!
Also if you are looking to hire me I would love to join your team!