Great resource management game!
This is a great game! It was very professionally made and I have yet to find any bugs (aside from some pathfinding behavior.) On that note and as to possible improvements, with the current "danger avoidance" mechanism (running away from zombies) seems to act only when a person comes within close proximity to a zombie. This behavior differs from the perfect information mode with which the game is presented to the player. Possibly a danger mapping AI would be more apt. An example of this system would be if the the position of zombies along a proposed path were utilized in creating a "danger rating" for that path. That rating would then be compared to other possible paths to find a balance between safety and distance. I believe this is how most RTS AI's find an optimal path.
Thank you for putting in the required time to create such a complete and "replayable" game!