Thank you very much for your review! Yes, better background is something I also considered, I may change it in a second version later on.
Are you sure about Istanbul and Istanbul City? Everything is fine when I click them... have you exprerienced this issue while playing a game on the map or simply while examining it?
(Edit) I see what you mean... I'll fix it ASAP. (Edit No2) The overlapping issue has been fixed. It's now a matter of time for the new version to be changed into public mode. Thank you again for spotting the problem. :)