I have found a bug with the Star Forts of the Bulgarian faction. Creating a Star Fort with a Star Fort wagon, a star for will be made instantly at that point and the wagon will not disappear. Further more, You can make infinite amounts of Star Fort, but only after your current Star Fort has been destroyed or deleted. However, you cannot train units that function from the Star Fort; they spawn flag bearers that run at 10 ms and can't attack or do anything, only providing line of sight. The Star Forts, however, can fire, so this can be abused as a form of defense.