Start with a population map
Headcount is the map-first population game: one target, one loop, and a real population count from a global grid after you commit.
Turn city size into risk
Geo Blackjack makes population scale feel tactile. A megacity can win the hand or bust it; a smaller regional hub can be the safer draw.
Learn scale by playing
Population games teach the difference between city fame and city size, dense metro areas and sparse regions, and how people cluster across the map.