Scorned Wilderness

Added on launch day with 1.0, and the only region that is not a landmass: scattered floating islands you can only reach after putting down the elemental dragons that guard the gateways between them.

It carries two things. The Hub is a building space, the endgame base area. The rest is a raid zone, which is Jagex's own word for it, reached through the Regicide quest.

The terrain itself is hostile in a way the other regions are not. You need protection from Kuldra's attacks simply to move around, on top of the elite dragon forces and magical anomalies already in the way.

At the end of it sits Kuldra's Sanctum, and Kuldra: power 9, 240,000 health, the only thing in Dragonwilds above 10,000. That number is not a typo and not a difficulty statement on its own. The fight hands you anima cannons that do 9,999 damage a shot, so the health bar is sized to the weapon rather than to your gear.