Yes, it just "unlocks" certain already existing objects (such as all the houses) : since they already exist (models and all), it's just a matter of making them visible in the editor. Sickboy's EU adds two sections in the Empty/Objects section: #Buildings and #Ruins (I think). Those are the main objects that can be added through it: note that all the houses will now no longer be named "House" (as in 1, move to that, house, at 5 o'clock), but rather whatever it happens to be in czech. But that's a very minor aesthetic difference

Much recommended!
Wolfrug out.