production Building Comparison
Gas Extractor vs Metal Mine
Comparing the Gas Extractor and Metal Mine, both production buildings in Starforge MMO. Base plots and energy upkeep are scarce, so use this to decide which structure earns its slot first.
Build & Output Comparison
| Attribute | Gas Extractor | Metal Mine |
|---|---|---|
| Max level | 20 | 20 |
| Base cost | 300 metal, 150 crystal | 200 metal, 100 crystal |
| Upkeep | 15 energy | 10 energy |
| gas production / level | +15★ | — |
| metal production / level | — | +50★ |
★ marks the higher per-level output. Compare against your base's current bottleneck before committing a plot.
Gas Extractor
Atmospheric gas harvesting platform.
Metal Mine
Extracts metal from planetary crust. Core income source.
Which Should You Build First?
Both are production buildings, so the choice depends on your current bottleneck. Prioritise the structure whose highlighted per-level output addresses your scarcest resource, and weigh that against its energy upkeep — a high output that drains your power grid can stall the rest of your base.