The city state of Oolong Morblock is the setting of the twelve-volume Oolong Morblock series. The series title is "Oolong Morblock" or the "Tales of Oolong Morblock" series. This series may also be referred to as the Omblock series.

Oolong Morblock (commonly referred to by its inhabitants as "Omblock") is a city state with a population of twenty million people. It occupies a number of islands in the Felbreshkimus Ocean. To the west, it is uncomfortably close to the nation of Insulin Thex, a part of the continent of Malthus. To the east, the immensities of the Felbreshkimus Ocean stretch away to the continent of Relsh Strazgorg, which is occupied by a nation of the same name.