"A frigid region, once home to the oldest nation in Ishgria. Records say that it thrived as the heart of the demon nation in ancient times."
Estria is the eighth region in Ishgria that is unlocked by defeating Dragon Demon Barion in Mt. Nerga of Fal Nerga.
Clearing Demon Castle Estria grants access to Menon and Sealed Altar, provided Sealed Dragon's Deep has also been cleared to unlock the latter. Additionally, clearing Sealed Altar is one of the pre-requisites to unlocking Ark of the Sealed God, the EX dungeon in Menon.
List of Dungeons in Estria
| Dungeon | Element/Notes |
|---|---|
| Oil Platform Adel | 
|
| Zig Snowfield | 
|
| Ice Forest Sulsoria | 
|
| Gate of Abdication | 
|
| Shining Cave Navoa | 
|
| Olaim Ice Ridge | 
|
| Demon Castle Estria | N/A |
| Sealed Altar | EX Dungeon |
| Quests | |
|---|---|
| Grand Gaia |
Mistral • Morgan • St. Lamia • Cordelica • Amdahl • Encervis • Palmyna • Lizeria • Ryvern • Agni • Mirvana • Lanara • Vriksha • Aldahlia • Atharva • Bariura |
| Ishgria |
Celgrad • Lem • Beiorg • Wulgee • Rakshult • Zamburg • Fal Nerga • Estria • Menon • Mildran |
| Otherworld |
Bectas • Vilanciel • Ohbanahara • Rokkzalm • Valdroar • St. Creek |