GM_Construct but its during the start of a zombie apocalypse
My friend Hedgecrab had the idea of making gm_construct but it takes place a couple of hours after the start of a zombie virus outbreak. This map has a custom soundscape in which you can hear police cars wail in the distance, gunshots ringing out left and right, and distant yells, shouts, and screams from people. You can also see cars evacuating the area on a highway in the distance.
If you do not like the custom soundscape or crickets chirping, you can toggle both with buttons in the secret room, and you can also turn on peaceful ambience mode, which disables the gunshots and screams, along with the distant flashes of light. And yes the map has AI nodes and navmesh.