Updated 7 Sep 2026
Biomes/The Sporeveil

The Sporeveil is a veil biome that runs up to Threat 20, and everything in it is Poison — so Venom and the Contagion payoff are the language of the fight. The Spider King waits at the end, with 1140 health and 8 Uniques to give up.

A run through it lays out 25 rooms — 1 entry, 15 combat, 2 boss, 2 transit, 1 shrine, 2 branch, 1 loop and 1 placeholder — and draws 0–10 of the combat ones on any given floor. Come in around level 5 for every Threat step you are attempting, with about 12 power for each of your levels.

2 creatures from the shared Demon crowd are swapped out here: ImpSporeling and Imp OverlordThe Spider King.

Waiting at the end

The Spider King
Spider · 1140 HP · 20 dmg · 2 drops per kill · summoned with Spider King's Eye
Uber form×3 HP · ×1.75 dmg
Uniques it can drop8
Calls inSporeling

What lives here

7 roles · at the lowest Threat
RoleEnemyHPDmgArmorXP
swarmerSporeling
Fungus
32706
bruiserToadstool Husk
Fungus
8416012
rangedSporespitter
Fungus
401009
hunterVenomfang
Spider
5611011
controllerBlight Mine
Construct
6011014
supportRot Shaman
Plant
548014
minibossThe Sting RegentMINIBOSS
Insect
86028480

Swapped out here

2 swaps
Elsewhere you would meetHere you meet

Structures

6 structures · one is drawn per run
StructureWeightHow often you see it
Sporeveil Dungeon1
Sporeveil Fortress1
Sporeveil Warrens1
Sporeveil Courtyard1
Sporeveil Sanctum1
Sporeveil Crossing1

How a floor is laid out

25 rooms built · 0–10 combat rooms drawn per run
EntryCombatBossTransitShrineBranchLoopPlaceholder
115221211