Katalam was originally occupied by an ancient race known as the Danuar. After the Cataclysm, Tiamat invaded Katalam in an attempt to gain even greater power by acquiring a deadly Danuar Hyperion weapon. While she succeeded in occupying Katalam, she failed to harness the weapon’s power. Failure to properly fuel the weapon contaminated the surrounding areas, mutating the creatures in Katalam with Ide, the weapon’s power source. Desperate to reclaim their lands, the Danuar attempted to repel the Tiamat legion. However, they made a fatal mistake by detonating one of their weapons, which resulted in the ancient people’s demise.
With Tiamat dead, Katalam is on the brink of crisis as the Beritra legion moves in to take over her rule. Each force mired in their own intense battles, the Elyos, Asmodians, Tiamat remnants, and Beritra legion all seek to control the bases and fortresses of Katalam to gain the ultimate tactical advantage.
Danaria was the homeland of the ancient Danuar, but much of their history is unknown. Even though the original residents are gone, their legacy is left behind in the form of ancient ruins and relics from a time long past. Littered with ancient Danarian bases and fortresses, the land holds a prime opportunity for the Elyos and Asmodian war efforts. Each force is in constant warfare against each other, vying to become the Lords of the land. The Beritra forces have also established a foothold within the area, allowing them to lock horns with the Elyos and Asmodian forces in a vie for supremacy.
Never ones to miss a lucrative opportunity, Goldrine Limited, a conglomerate of the Shugo commerce union, exploit their neutral position to engage in many developmental projects in the area. Likewise, the Dragonbound and the Steel Rose pirate crew also have mysterious interests in the land.
The Idian Depths are considered a great place to extract Ide energy thanks to bountiful Idium mines within. In effect, this was a hideout designed by the Danuar in preparation for a worst-case scenario where the forces of Tiamat take over Katalam. Even then, some of the Danuar who evacuated here fell to their demise and the place was left unattended. Tiamat managed to reach Idian Depths by achieving victory over the Danuar and discovered the ancient weapons there, prompting her to research how to use and replicate them. Her aspirations fell short when she was slain in Tiamaranta. After Tiamat's death, the remnants of her armies who scattered across Katalam came down to Idian Depths to avoid the attacks from the Daevas and Beritra’s forces. From here, they divided into two opposing factions: those who dreamt of a glorious comeback and those who made a pledge of loyalty to Beritra.
Meanwhile, the Elyos Guardian Detachment and the Asmodian Archon Battlegroup have also ventured into Idian Depths in their ongoing fight to gain the upper hand.