Ok i was playing with the AI players set to challenging and suddenly at the start of a new turn i can only see one small area of map, which i've never seen before, my army and garrison units are scattered across it and all my cities and all the rest of the map seem to be gone. Cities don't even show up on the left hand screen icons any more ( i had 8 of them).
Scrolling out does nothing Most of my units can't move even though it says they have move left.
The End Turn button seems to have disappeared too. So that's that game screwed.
EDIt - oh wait it's a battle but on a huge battlefield and zoomed way out and didn't tell me there was a battle before i was in it - lol