Hides some of your resources from raiders.
Protect part of the stockpile from raiders. Hidden storage buys resilience, but does not stop attacks or protect every resource you accumulate.
To establish this building, you need 🏛️ Main Building level 1; the Race restriction shown in the statistics below.
For later upgrades, the Main Building must also reach the target level. The level table shows the resource and time investment before bonuses.
The building definition has no direct structural or active power upkeep. Check the powered extractors, crafting and recruitment that support its use when planning the wider grid.
📸 Screenshot wanted: the Bunker detail panel in a colony (level, upgrade cost and its main controls visible). If the building has a Race name, one shot per Race is ideal.
| Stat | Value |
|---|---|
| Available to | The Ancient Hegemony |
| Max level | 10 |
| Level 1 cost | 30 Silicates, 20 Metals |
| Cost growth per level | ×1.28 |
| Base build time | 10 s |
| Build time exponent | 1.6 |
| Max per outpost | Unlimited |
Base numbers, before any research, Race, tile or build-speed bonus.
| Level | Cost to reach | Build time |
|---|---|---|
| 1 | 30 Silicates, 20 Metals | 43s |
| 2 | 40 Silicates, 25 Metals | 1m 09s |
| 3 | 50 Silicates, 35 Metals | 1m 38s |
| 4 | 65 Silicates, 40 Metals | 2m 11s |
| 5 | 80 Silicates, 55 Metals | 2m 48s |
| 6 | 105 Silicates, 70 Metals | 3m 28s |
| 7 | 130 Silicates, 90 Metals | 4m 11s |
| 8 | 170 Silicates, 115 Metals | 4m 57s |
| 9 | 215 Silicates, 145 Metals | 5m 46s |
| 10 | 275 Silicates, 185 Metals | 6m 38s |
Key: concealment_grid