The other day i have the idea of creating dynamic underground shelters for this mod. Well the Arma 2 engine doesn't really allow characters under the terrain level, but this can be tricked. Aparently the engine does allow objects at really high altitudes (like 100 Km), at this distance the object it's completly invisible for the players. Here is how it works: When collect all the needed materials you can place a fake ground door where you want to create the shelter, this will call a script that will place the shelter in the exact possition of the fake door but 100 km up in the sky, the outside door contains a teleport script to the new shelter, and the shelter door (or a ladder in my case) contains a teleport script to the outside door. When the player goes into the outside door script, the object shelter is dynamically created and the player placed inside, when all the players go out the shelter the position of the shelter and all the objects inside are stored into the Database and the object destroyed for optimization. Here is a video example (not dynamically created, i suck at coding, but you'll get the idea): http://www.livestream.com/goosemannertv/video?clipId=pla_a0848b55-47a5-4feb-aaf2-cd77b9a7c313&utm_source=lslibrary&utm_medium=ui-thumb I think this could be made for the empty houses too, allowing fake interiors for all the map if it's doable.