The idea was that this is the last human town on earth and that zombies had taken over the world but I haven't really said that yet.
Ok, well now we have something. How about drawing a map of a town or city then, with buildings, roads, maybe some rivers with bridges... Then you could make some of the buildings be invaded by zombies. Perhaps each player starts with one building, and those are the last human strongholds, and all the rest of the buildings are taken over by zombies.
If you take this approach, you could do a lot graphically with the map. Worn down roads, houses in ruins, broken cars etc. Dead bodies... A real apocalyptic scenario.
For a bonus structure, you could have each building give a bonus. You could make roads territories with decay (losing troops each turn) because the streets are not safe, due to zombies. And then you would have to go through the roads to take over the buildings from the zombies.
One more thing, when you start designing the infrastructure of the town, try not to make it too square and grid-like (like your current map). Try to make it more resembling a real town. Look at some city maps at google. Most cities of the world are not built to a square grid, they have variation...
It could also be fun to base the map on a real city. Which one, is your choice...
Well, this should give you some thoughts to chew on. Good luck with the map.
