Ash Of Sin: Boss Realms

Every structure that houses a boss—or summons one—receives a dimension of its own.
Each realm is shaped naturally by the biome its structure originally belongs to:
thrones over warm oceans rest upon the waves,
thrones beneath the earth are buried in the deep,
thrones of the nether stand upon seas of lava,
thrones of the end drift above the void.
The structure settles at the center of the largest matching terrain near 0,0 (sea or land), and underground structures are crowned by a vertical shaft that opens them to the sky.
When no player remains inside, the whole realm is rebuilt after a short countdown
—boss and dungeon restored, awaiting the next challenger—
and while it is being reborn, no one may enter by any means.
Structures that received a realm no longer generate naturally in their original world:
kings no longer wander the wilds—they wait for you in their own realms.

