The Sky Empire, The Old Empire
Altus was once a great empire spanning the continent of Alter and parts of Nezur and Zenda. The capital city of Altus was the seat of the empire and was situated on one of the sky islands. The empire first started with the unification of the sky island states and the consolidation of their power into the greatest airship fleet the world has seen since.
However, many years ago the empire crumbled due to mysterious circumstances. The emperor, imperial house and nobles, were killed along with the destruction of the entire city of Altus. Nearly a third of the sky islands were destroyed by a mysterious force. SOme people believe that this was the wrath of a god or gods due to the hubris of the empire.
The former vassal states and cities of the empire are now fragmented and most have formed their own city-states and small kingdoms.