According to Anya Oliwa, Über Concrete is the essential building block of the Nazi Regime, being based on Da'at Yichud technology and being almost perfect. The only weakness of the substance is that when it deteriorates over time, the concrete starts developing mold. Thus causing people to develop some kind of allergic reaction or become sick off of this mold as it's depicted by several guards in Eisenwald Prison. Though only some Nazi citizens realize that something is wrong, but most citizens just shrug it off and just believe that it's just a coincidence and blame it off of "unhealthy living" by citizens living in cities such as Berlin.