Dortane

Dortane, also known as the Forbidden Kingdom is a dark kingdom in which King Cyverax is running his base of operations in his self-named castle. It is off-limits to normal Dungeicka inhabitants and only accessible by members of the Cyetra and various minions. Dortane is the main objective of Paltaur and the heroes in Dungeicka: The Forbidden Kingdom where they must go to defeat King Cyverax to save Dungeicka from the darkness. Minutes after they enter Dortane, they are greeted by the mysterious dragon Shaderox and he abducts Princess Mercelia and takes her to Cyverax Castle. This gives reason for Paltaur and the gang to go to the castle immediately to save her. Dortane, being the forbidden kingdom and main objective is referenced in the first Dungeicka game's title, "The Forbidden Kingdom".

Peaceful Dortane
After the events of First Trilogy the dark forces erase themselves from Dortane making it a completely normal kingdom that anyone can inhabit. It becomes a main kingdom you can explore during the events of Immortalized and Providential Fate, it also becomes inhabited by the Arbradon Knights during the events of Dungeicka II-2: Realm of Arbradon.