Bone Fortress

Army building

Not built directly

Bone Fortress is an army building in Stellaris 4.5.2. It costs 800 Minerals, 400 Biomass, 50 Volatile Motes and takes 360 days to build, with an upkeep of 8 Minerals, 1 Volatile Motes a month. It adds Soldiers, Battle Thralls, Knights and Warrior Drones jobs, depending on the empire. It needs Global Defense Grid.

Cost: 800Minerals400Biomass50Volatile Motes
Upkeep: 8Minerals1Volatile Motes
Build time: 360 days
Housing: —
ID: building_planetary_carapace_2

Jobs Bone Fortress adds

Jobs come from the building's job modifiers; 4.x counts jobs in hundreds (a district adds 100). Variants for other kinds of empires are listed with their condition.

200 Soldiers
Not: Gestalt Consciousness; none of: Has knights zone; none of: Modifier: Thral…
- Owner
  - Not: Gestalt Consciousness
- None of
  - Has knights zone
  - Modifier: Thrall-World
200 Battle Thralls
Not: Gestalt Consciousness; Not: Has knights zone; Modifier: Thrall-World
- Owner
  - Not: Gestalt Consciousness
- Not: Has knights zone
- Modifier: Thrall-World
100 Knights
Not: Gestalt Consciousness; Has knights zone; Not: Modifier: Thrall-World
- Owner
  - Not: Gestalt Consciousness
- Has knights zone
- Not: Modifier: Thrall-World
200 Warrior Drones
Gestalt Consciousness
- Owner
  - Gestalt Consciousness

Cost, upkeep and output

Base values from the building's resources block; conditional variants (nomadic empires pay other resources, for example) open with their condition.

Cost: 800Minerals400Biomass50Volatile Motes
Upkeep a month: 8Minerals1Volatile Motes

What Bone Fortress does

Only in some cases

- +3%Infrastructure Build Speed
- +3%Decision Enactment Speed
when…
- Owner
  - Wilderness empire
  - Tradition: Purity Traditions Finished

Upgrade chain

upgrades = { } in the files: each building upgrades to the next.

How to unlock Bone Fortress

Global Defense GridTechnology

Shown when (potential)

Owner
- Wilderness empire

Can be built when (allow)

Has upgraded capital
- When Modifier: Resort World
  - Requires Resort Administration on colony.
- When Modifier: Thrall-World
  - Requires Governor's Palace on colony.
- When Planet class: Orbital Habitat
  - Requires Habitat Administration on colony.
- When owner (Wilderness empire)
  - Requires Planetary Root Bundle on planet.
- When owner (Hive Mind)
  - Requires Hive Core on colony.
- When owner (Machine Intelligence)
  - Requires Administrative Array on colony.
- Otherwise
  - Requires Planetary Administration on planet.

Destroyed or converted when (destroy_trigger)

Owner
- Not: Wilderness empire

In the game

This sprawling facility of hardy training grounds and accommodations ensures the defenders housed within are braced for any planetary incursion.

ID

building_planetary_carapace_2

Bone Fortress: questions

How much does Bone Fortress cost in Stellaris?

800 Minerals, 400 Biomass, 50 Volatile Motes, 360 days to build; upkeep 8 Minerals, 1 Volatile Motes a month (common/buildings, base values).

What jobs does Bone Fortress give?

Depending on the empire: Soldiers, Battle Thralls, Knights and Warrior Drones.

What does Bone Fortress upgrade from and to?

It is upgraded from Bone Garrison.

What is the ID of Bone Fortress?

building_planetary_carapace_2 (common/buildings, Stellaris 4.5.2).

Source: common/buildings/21_wilderness_buildings.txt, Stellaris Cygnus v4.5.2 (9776). Base values before modifiers.