Came back for a Marathon/Prince/Enormous/Pangaea game to kill time until the next latest-and-greatest appears come Q1 of 2018. (I have a rather narrow range of genres that I actually like to play.) I founded a Religion before anyone else even started with pantheons. Converted all three of my own cities, and several in the surrounding area. But then for no reason I can see, my missionaries stopped being able to enter any CS or opponents' city hexes to get next to the city center to do some converting. VERY FRUSTRATING! It may very well be that one or more of my @25 mods may have caused a lockout, but I can't see why. Why initially be able to enter and converts, but then entry becomes verboten?