Desert state was the name given to the large, but poor, states that existed in the vast deserts of Unistarch, often struggling with small and fragmented populations due to the lack of easily available food and water. Vallum was a significant desert state that went on to form the Impatinum Unistarch.

Due to Unistarch being unified under a single polity (the Impatinum Waterbe), the term is no longer relevant, with most existing deserts either terraformed or utilised in other ways.