Out of curiosity.. what kind of models do you need? and do you need them to be animated? I might be able to get some from a friend (he's a 3D making dude...)
Has no one here seen terminator? -.- KILL IT! KILL IT WITH FIRE! jkz I've never tried learning how do to AI... is it just a more complex version of "if, else, elseif?
How did you make them handle messed up ground? Do they build a foundation around it or...? And also are the houses random or do they have a set design?