Realism

[stern23]

I think I found the mod they use on the hMod forums. It's called Realms. It allows people with the proper rights to define a zone of pretty much any size. Inside that main zone, other, smaller ones can be defined. Reading the guides in their forums, I'm pretty sure this is how Buxville does their hotels/ apartments.

There is a lot of things you can do with these defined zones. Admins can use them to define areas for new players that PvP would not be allowed in. Can also be used do allow/ forbid building, or even entering, into defined areas. Could be very useful.