The “Fog of War” reference to areas of a map in certain games where the player can’t see details. Often times being “blacked out” until explored. This has happened many times for the Civilization series. Though with Civ VI, it’s going to be altered a bit.
“The big difference in our Fog of War from Civ 5 is that Civ 5 had the clouds. Now we’re treating the totally unexplored areas as a blank parchment with longitude and latitude lines on it,” says Brian Busatti to IGN. “But as you explore that you start to open things up. The mid-fog, instead of being a darker version of the visible terrain, is now drawn in a map style. So we have shaders on it that simulate a pen-and-ink cross-hatch style map. It’s really cool and I’m excited to show that off. And in the empty spaces we have hand-drawn ships and sort of ‘here be dragons’ kind of stuff.”
Civilization VI comes out October 21st.