Biome database
Iron AgeBoss 3: BonemassGame data 0.221.12

Swamp

The Swamp combines constant wet status, poison threats, Sunken Crypts, iron, and a major increase in combat difficulty.

Items
84
Creatures
16
Recipes
41
Building pieces
35

Preparation

  • Bring Poison Resistance Mead and keep the rested effect active.
  • Use strong food and reliable blunt damage.
  • Place a recovery portal outside dangerous areas.

Progression goals

  • Open Sunken Crypts with the Swamp Key.
  • Mine scrap iron and improve gear, stations, and transport.
  • Defeat Bonemass and obtain the Wishbone.
Primary warning

Wet status, poison, deep water, and mixed enemy groups make stamina management especially important.

Bonemass

Progression boss for Swamp

Summon or access

Offer 10 Withered Bones

Base health

5,000

Open boss record

Items and resources

Highest-priority current item records associated with this biome.

Browse all 84 associated items

Creatures

Sorted by base health within the current biome classification.

Browse all 16 associated creatures

Recipe progression

Recipes whose earliest calculated availability is this biome.

Browse all 41 associated recipes

Building unlocks

Crafting pieces and high-comfort options appear first.

Browse all 35 associated pieces
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