where are gems used and viewed?
also water and iron ; theyre displayed on the tiles but to do what?
suggestion for a savestring to reload a game, especially from another computer/device or after some time.
Gems from exploration give you additional "raw resources" when you found your next city. Water and iron are the raw resources, giving you some materials and food without having to build anything. Gems can also show up as a raw resource, giving you gold.
A save string isn't a bad idea, but I don't intend to continue development on this game. It could be used in a sequel though.