This is a very wonderful tool for use in education. I commend all of the work that has been done on it. I have a few suggestions. First of all I believe it would be beneficial to add a leveling system in the game; some way to judge how far an individual has come in their travels. Also, I may be missing it, but I do not see a place to spend your money. Perhaps you could add a way to spend money (I agree with paying for a travel system, a comment made on another topic in the opinions and ideas sections). Finally, I believe some sort of a combat system would make the game interesting. I understand that this is a game for educational purposes, but perhaps there is a way to add combat without violence or death. Perhaps an 'avatar' sort of setup. These are just a few points I believe can make this a more productive tool in the classroom. It is a very wonderful development, and it is very evident that a great deal of hard, quality work has been put into making this great resource. I wish you the best in the future development of this game! Best wishes!
A few ideas