🏛️ Main Building
Caps most local building levels and gates advanced structures. Resource fields and the Chronos Core are exempt.
Strategic role
Develop this alongside the rest of the outpost: most structures cannot be upgraded beyond its level. Raising it opens room for further investment rather than directly increasing field output.
Requirements and progression
There are no additional building-level or research prerequisites.
This building is exempt from the ordinary Main Building level cap. The level table shows the resource and time investment before bonuses.
Direct building dependencies: 🚆 Regional Rail Terminus (level 5 required here); 🕊️ Diplomatic Relay (level 3 required here); 📡 Signal Tower (level 5 required here); 🔬 Research Hub (level 5 required here); 🏛️ Collector Spire (level 5 required here); 📋 Shift Office (level 3 required here); 🧠 Compute Core (level 3 required here); 🥚 Brood Chamber (level 1 required here).
Power planning
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 Main Building 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 |
|---|---|
| Max level | 20 |
| Level 1 cost | 70 Carbon, 40 Silicates, 60 Metals, 20 Gas |
| Cost growth per level | ×1.28 |
| Base build time | 30 s |
| Build time exponent | 2.2 |
| Max per outpost | 1 |
Level by level
Base numbers, before any research, Race, tile or build-speed bonus.
| Level | Cost to reach | Build time |
|---|---|---|
| 1 | 70 Carbon, 40 Silicates, 60 Metals, 20 Gas | 30s |
| 2 | 90 Carbon, 50 Silicates, 75 Metals, 25 Gas | 31s |
| 3 | 115 Carbon, 65 Silicates, 100 Metals, 35 Gas | 39s |
| 4 | 145 Carbon, 85 Silicates, 125 Metals, 40 Gas | 47s |
| 5 | 190 Carbon, 105 Silicates, 160 Metals, 55 Gas | 55s |
| 6 | 240 Carbon, 135 Silicates, 205 Metals, 70 Gas | 1m 05s |
| 7 | 310 Carbon, 175 Silicates, 265 Metals, 90 Gas | 1m 16s |
| 8 | 395 Carbon, 225 Silicates, 340 Metals, 115 Gas | 1m 27s |
| 9 | 505 Carbon, 290 Silicates, 430 Metals, 145 Gas | 1m 41s |
| 10 | 645 Carbon, 370 Silicates, 555 Metals, 185 Gas | 1m 55s |
| 11 | 825 Carbon, 470 Silicates, 710 Metals, 235 Gas | 2m 11s |
| 12 | 1060 Carbon, 605 Silicates, 905 Metals, 300 Gas | 2m 29s |
| 13 | 1355 Carbon, 775 Silicates, 1160 Metals, 385 Gas | 2m 49s |
| 14 | 1735 Carbon, 990 Silicates, 1485 Metals, 495 Gas | 3m 12s |
| 15 | 2220 Carbon, 1270 Silicates, 1900 Metals, 635 Gas | 3m 37s |
| 16 | 2840 Carbon, 1625 Silicates, 2435 Metals, 810 Gas | 4m 04s |
| 17 | 3635 Carbon, 2075 Silicates, 3115 Metals, 1040 Gas | 4m 35s |
| 18 | 4650 Carbon, 2660 Silicates, 3990 Metals, 1330 Gas | 5m 10s |
| 19 | 5955 Carbon, 3405 Silicates, 5105 Metals, 1700 Gas | 5m 48s |
| 20 | 7620 Carbon, 4355 Silicates, 6535 Metals, 2180 Gas | 6m 32s |
Key: command_nexus